Elevation and Plan of Execution Rocks Lighthouse, New York
Lighthouse Maps and Plans for Execution Rocks, New York
Cabrit Underwater Scene - National Parks Gallery
Hard corals take hold even in the surf zone. Cabrit Horn is on the south shore of St. John.
Acadia national park - Healthy Seastars
Healthy seastars have been susceptible to a disease outbreak, ranging from Maine to California
Underwater images - SARI_DUW_150515-121
Net accretion on the reef has been very slow. With a mere 20 minutes of bottom times at depths of 130ft, there is not a lot of time to ponder 10,000 years of development! Scientists have taken core samples and... More
Underwater images - SARI_DUW_150515-156
White Spotted Filefish can darken and lighten almost instantaneously!
Underwater images - SARI_DUW_150515-111
The canyon walls are a dense and diverse environment - it is no wonder to dive the St. Croix wall is on many divers "bucket list."
Underwater images - Spotted Trunkfish
Scientific name: Lactophrys bicaudalis Public domain photograph by National Parks Administration, nature conservation, tourism, free to use, no copyright restrictions image - Picryl description
Underwater images - Scrawled Cowfish
Scientific name: Acanthostracion quadricornis Public domain photograph by National Parks Administration, nature conservation, tourism, free to use, no copyright restrictions image - Picryl description
Diver admires an impressive stand of Elkhorn Coral
Diver admires an impressive stand of Elkhorn Coral, Biscayne National Park
Coral and Mangroves - National Parks Gallery
Coral and Mangroves Public domain photograph by National Parks Administration, nature conservation, tourism, free to use, no copyright restrictions image - Picryl description
Garibaldi and California Spiny Lobsters
Garibaldi and California Spiny Lobsters Public domain photograph of underwater diving, free to use, no copyright restrictions image - Picryl description
Underwater images - Great Barracuda
Scientific name: Sphyraena barracuda Public domain photograph by National Parks Administration, nature conservation, tourism, free to use, no copyright restrictions image - Picryl description
National parks: Seafan - public domain image
Spur and groove relief with fantastic soft and hard coral growth
Pillar Coral Forest - National Parks Gallery
View through an underwater pillar coral forest Public domain photograph of underwater diving, free to use, no copyright restrictions image - Picryl description
Underwater images - Spotted Trunkfish
Scientific name: Lactophrys bicaudalis Public domain photograph by National Parks Administration, nature conservation, tourism, free to use, no copyright restrictions image - Picryl description
Virgin Islands public domain photo - Elkhorn Coral
Elkhorn Coral is an endangered and protected species. Anchoring in the Virgin Islands National Park is only allowed in three locations. Know the regulations and keep the reefs safe for future generations. viis... More
Underwater images - SARI_DUW_150515-125
The boat mooring in Salt River canyon is in about 20 feet of water, and perfect for a safety stop or longer decompression. Here, the colors are much more vibrant and abundant barrel sponges and sealife makes ti... More
Underwater images - VIIS_WATER_150512-165
Public domain photograph by National Parks Administration, nature conservation, tourism, free to use, no copyright restrictions image - Picryl description
Pink Sponge below the surface - Public Domain image, National Parks Ga...
Pink Sponge below the surface, growing on a mangrove root Public domain photograph of coral reef, underwater life, free to use, no copyright restrictions image - Picryl description
Underwater images - Scrawled Filefish
Scientific name: Aluterus scriptus Public domain photograph by National Parks Administration, nature conservation, tourism, free to use, no copyright restrictions image - Picryl description
Underwater images - VIIS_WHIS_150511-122
Underwater Landscape Public domain photograph of underwater diving, free to use, no copyright restrictions image - Picryl description
Underwater images - Kelp Bass - Public Domain image, National Parks Ga...
Scientific name: Paralabrax clathratus Public domain photograph by National Parks Administration, nature conservation, tourism, free to use, no copyright restrictions image - Picryl description
Underwater images - SARI_DUW_150515-112
The canyon environments are easily accessed from shore by boat. Several local operators run daily dive trips to Salt River.
Diver admires a beautiful stand of Elkhorn Coral
Diver admires a beautiful stand of Elkhorn Coral Public domain photograph of underwater diving, free to use, no copyright restrictions image - Picryl description
Underwater images - Spotlight Parrotfish
Scientific name: Sparisoma viride Public domain photograph by National Parks Administration, nature conservation, tourism, free to use, no copyright restrictions image - Picryl description
School of bass - National Parks Gallery
School of bass Public domain photograph by National Parks Administration, nature conservation, tourism, free to use, no copyright restrictions image - Picryl description
CHIS-3DUW-101114-152 - Public Domain image, National Parks Gallery
One of the largest sisters in the world, the sunflower sea stars have 16-24 limbs.
Underwater images - SARI_DUW_150515-143
If a diver is familiar with other Caribbean dives, he or she will be surprised by the wonderfully strange Salt River canyon formations - unique in all the world - which is why it's often among the top dive site... More
Mangrove Root and Sponge Fauna - Public Domain image, National Parks G...
Mangrove Root and Sponge Fauna Public domain photograph by National Parks Administration, nature conservation, tourism, free to use, no copyright restrictions image - Picryl description
Waterlemon Cay Underwater Landscape
Waterlemon Cay is one of the most beautiful snorkels on island. Delicate corals, stingrays, turtles, jellyfish - - absolutely beautiful!
Snorkeler swims through a school of silversides
Snorkeler swims through a school of silversides, Dry Tortugas National Park
Underwater images - SARI_DUW_150515-162
Soft and Hard corals and schools of fish in about 130fsw.
Virgin Islands public domain photo - Soft Corals
Soft Corals, known as gorgonians, are part of a major study by scientists looking at how populations have changed over time on St. John. Preliminary data suggests gorgonia density on St. John has been increasi... More
Underwater images - Blue Tang - Public Domain image, National Parks Ga...
Blue Tang swim over a coral reef Public domain photograph of underwater diving, free to use, no copyright restrictions image - Picryl description
National parks: Garibaldi - public domain image
Scientific name: Hypsypops rubicundus Public domain photograph by National Parks Administration, nature conservation, tourism, free to use, no copyright restrictions image - Picryl description
Christmas Tree Worm - National Parks Gallery
Christmas Tree Worm Public domain photograph related to US National Parks, Nature, conservation, free to use, no copyright restrictions image - Picryl description
Underwater images - SARI_DUW_150515-108
A diver must monitor their depth gauge carefully, particularly in clear conditions. All recreational divers should stay within the 130fsw limit - there is much to see above these depths and nothing below to ris... More
Underwater images - California Sheepshead
Scientific name: Semicossyphus pulcher Public domain photograph by National Parks Administration, nature conservation, tourism, free to use, no copyright restrictions image - Picryl description
Underwater images - Scorpion Fish
Scientific name: Scorpaenidae Public domain photograph related to US National Parks, Nature, conservation, free to use, no copyright restrictions image - Picryl description
Underwater images - VIIS_JOHN_150511-138
Public domain photograph of coral reef, underwater life, free to use, no copyright restrictions image - Picryl description
Diving and Elkhorn Coral, Biscayne National Park
A diver observes and impressive stand of Elkhorn coral, Biscayne National Park
Soft Coral Underwater Landscape
Soft Coral Underwater Landscape Public domain photograph of underwater diving, free to use, no copyright restrictions image - Picryl description
Underwater images - SARI_DUW_150515-131
Diver and Purple tube sponge Public domain photograph of underwater diving, free to use, no copyright restrictions image - Picryl description
Divers exploring a shipwreck - Public Domain image, National Parks Gal...
Young diver being guided around a shipwreck, Windjammer Wreck, Dry Tortugas National Park
Jr. Ranger snorkeling a reef - Public Domain image, National Parks Gal...
A Jr Ranger snorkeling a reef and looking at sealife with a buddy.
Healthy Stand of Pillar Coral - Public Domain image, National Parks Ga...
Healthy Stand of Pillar Coral Public domain photograph of underwater diving, free to use, no copyright restrictions image - Picryl description
Underwater images - VIIS_Hurricane_150513-144
Public domain photograph of underwater diving, free to use, no copyright restrictions image - Picryl description
Underwater images - VIIS_Hurricane_150513-165
Public domain photograph of underwater diving, free to use, no copyright restrictions image - Picryl description
Underwater images - Underwater Landscape
Underwater Landscape Public domain photograph of underwater diving, free to use, no copyright restrictions image - Picryl description
Underwater images - Yellowheaded Jawfish
Scientific name: Opistognathus aurifrons Public domain photograph related to US National Parks, Nature, conservation, free to use, no copyright restrictions image - Picryl description
Underwater images - VIIS_WATER_150512-124
Public domain photograph of underwater diving, free to use, no copyright restrictions image - Picryl description
Underwater images - VIIS_WATER_150512-131
Public domain photograph of underwater diving, free to use, no copyright restrictions image - Picryl description
Elkhorn Coral, Seafan and Sponge
Elkhorn Coral, Seafan and Sponge in Hawksnest Bay, St. John, US Virgin Islands
Underwater images - Gray Angelfish
Scientific Name: Pomacanthus arcuatus Public domain photograph by National Parks Administration, nature conservation, tourism, free to use, no copyright restrictions image - Picryl description
National parks: Hogfish - public domain image
Scientific name: Lachnolaimus maximus Public domain photograph by National Parks Administration, nature conservation, tourism, free to use, no copyright restrictions image - Picryl description
Underwater images - Waterlemon Cay
Underwater Landscape, Watermelon Cay, Virgin Island National Park Public domain photograph of underwater diving, free to use, no copyright restrictions image - Picryl description
School of Yellowjacks - National Parks Gallery
Scientific name: Carangoides bartholomaei Public domain photograph by National Parks Administration, nature conservation, tourism, free to use, no copyright restrictions image - Picryl description
Underwater images - Flamingo Tongue
Flamingo Tongues feed on toxic sea fans and become toxic themselves. The bright skin of the mantel warns predators that they are poisonous, and most will leave these gastropods alone, except the Hogfish.
Underwater images - Red Grouper
Scientific name: Epinephelus morio Public domain photograph by National Parks Administration, nature conservation, tourism, free to use, no copyright restrictions image - Picryl description
Underwater images - SARI_DUW_150515-174
Long Sea Whip Public domain photograph of coral reef, underwater life, free to use, no copyright restrictions image - Picryl description
National parks: Lionfish - public domain image
Scientific name: Pterois Public domain photograph of coral reef, underwater life, free to use, no copyright restrictions image - Picryl description
Giant Sea Anemone - National Parks Gallery
The giant anemone is a tropical species found in the West Indies around rockfalls and inshore coral reefs. Like all anemones, the tips of the tentacles are packed with nematocysts (toxins) that can cause very p... More
Underwater images - SARI_DUW_150515-102
Deep brown tube sponges are colorful when lit with an underwater strobe. Without lights, at greater depths, everything appears drab and colorless.
Underwater images - SARI_DUW_150515-107
The precise origin of Salt River canyon is unknown although it is thought to be an ancient river course. For more information, see: http://www.aoml.noaa.gov/general/lib/CREWS/Cleo/St.%20Croix/salt_river170.pdf
Effects of Rising Water Temperatures
Above average water temperatures can lead to coral bleaching, disease and death. In additional ocean acidification is a looming threat to this species
Underwater images - Gray Angelfish
Scientific name: Pomacanthus arcuatus Public domain photograph by National Parks Administration, nature conservation, tourism, free to use, no copyright restrictions image - Picryl description
Underwater images - VIIS_Hurricane_150513-139
Public domain photograph of underwater diving, free to use, no copyright restrictions image - Picryl description
Underwater images - Gray Angelfish
Scientific name: Pomacanthus Public domain photograph by National Parks Administration, nature conservation, tourism, free to use, no copyright restrictions image - Picryl description
Close up of Staghorn Coral - Public Domain image, National Parks Galle...
Close up of Staghorn Coral Public domain photograph of coral reef, underwater life, free to use, no copyright restrictions image - Picryl description
Underwater images - VIIS_Hurricane_150513-155
Picryl description: Public domain image of a world heritage landmark, natural or regular park, free to use, no copyright restrictions.
Diver on a section of shipwreck
Diver on a section of shipwreck Public domain photograph of underwater diving, free to use, no copyright restrictions image - Picryl description
Soft and Hard Corals in the Coral Reef National Monument
Virgin Islands Coral Reef National Monument includes federal submerged lands within the 3-mile belt off the island of St. John. These waters support a diverse and complex system of coral reefs and other ecosyst... More
Underwater images - Coral Wall - Public Domain image, National Parks G...
Underwater landscape Public domain photograph of underwater diving, free to use, no copyright restrictions image - Picryl description
Underwater images - Trumpet Fish
Scientific name: Aulostomus maculatus Public domain photograph of underwater diving, free to use, no copyright restrictions image - Picryl description
Underwater images - VIIS_Hurricane_150513-172
Public domain photograph of underwater diving, free to use, no copyright restrictions image - Picryl description
Banded Butterfly Fish - National Parks Gallery
Scientific name: Chaetodon striatus Public domain photograph by National Parks Administration, nature conservation, tourism, free to use, no copyright restrictions image - Picryl description
Underwater images - SARI_DUW_150515-100
Overlapping colonies of thin sheet coral populate the sheer canyon walls for hundreds of feet.
Underwater images - VIIS_JOHN_150511-105
Public domain photograph of underwater diving, free to use, no copyright restrictions image - Picryl description
Underwater images - Gray Angelfish
Scientific name: Pomacanthus arcuatus Public domain photograph related to US National Parks, Nature, conservation, free to use, no copyright restrictions image - Picryl description
Underwater images - Ocean Sunfish
Scientific name: Mola mola Public domain photograph by National Parks Administration, nature conservation, tourism, free to use, no copyright restrictions image - Picryl description
Diver on the Muzzles of the 14-inch Guns
All of the 14-inch guns on the <em>Arizona</em> were believed to have been salvaged during 1942 and 1943 salvage efforts, in which guns, machinery and other equipment were removed for use on other ships. In 198... More
SARI_DUW_150515-124 - National Parks Gallery
NOAA Underwater Laboratory System (NULS-1) a.k.a. Hydrolab - Constructed in 1966, the Hydrolab was used as a research lab beginning in 1970. The Hydrolab, which was stationed 50-feet underwater in the Salt Rive... More
Virgin Islands public domain photo - Black Coral
Black Coral grow deep and the species is rare. The Virgin Islands Coral Reef Monument was set aside by President Clinton to preserve and protect sensitive coral reef resources. Black Coral is protected worldwid... More
United States Coast Guard photo - BOATING SAFETY
(July 17)--A partially submerged pleasure craft. U.S. COAST GUARD PHOTO
United States Coast Guard photo - BOATING SAFETY
(July 17)--A partially submerged pleasure craft is inspected by a Coast Guard person. U.S. COAST GUARD PHOTO
Elkhorn (Acropora palmata), Yawzi Point, 2010
Yawzi Point is an out-of-the-way spectacular reef that offers the adventurous snorklers deep water, stunning elkhorn, brain and pillar coral, and abundant fish. Always snorkel with a buddy and do not exceed your limits.
Virgin Islands public domain photo - Coral Bleaching
Scientist have used the analogy of half the Statue of Liberty being gone, when talking about the decline of the Virgin Islands coral reefs. Rising water temperatures brought about devastating coral bleaching ev... More
Underwater images - CHIS_DUW_111004-144
In 2013 the seastar population was hit by Sea Star Associated Densovirus (SSaDV), devastating the general population and causing much concern about the future of starfish populations in the pacific ocean. Seast... More
Marines and Sailors from Special-Purpose Marine Air-Ground
Marines and Sailors from Special-Purpose Marine Air-Ground Task Force Africa 13.3 familiarize themselves with the emergency breathing device at the Water Survival Training Facility aboard Marine Corps Base Camp... More
Diverse Coral Reef - National Parks Gallery
There are now seven species of corals, found in the Caribbean, listed under the Endangered Species Act as threatened. NOAA listed 20 new corals as threatened under the Endangered Species Act, in August 2014 br... More
Camp Hansen Egress Training Facility increases safety
The modular amphibious egress trainer sits empty Aug. 20 at the Camp Hansen Aquatic Center. The MAET can be arranged to mimic the interior of different types of helicopters. Service members use the MAET to lear... More
A man swimming in the water with a hat on. Diving water submerged.
A man swimming under water with bubbles in the air / A man swimming under the water with bubbles in the background / Public domain space exploration photo.
A leaf floating on top of a body of water. Water leaves shadow.
Water: Free images of reflections in the water, available for commercial use and free download. Copyright-free, no attribution required.
A close up of an alligator's face in water. Crocodile reptile submerge...
Close up of a crocodile's head / A close up of an alligator's face in water / Animals public domain photography.
A man and a woman scuba in the ocean. Blue water divers equipments
Two scuba divers in the water / A diver and a diver in the water / Public domain stock photo.
A yellow submarine sitting on top of a sandy ocean floor. Legoland bui...
Stock photo: A submarine floating in the ocean / A yellow submarine sitting on top of a sandy ocean floor.
A hippo in a body of water. Hippopotamus submerged water.
Tourism: Hippo in the water at the zoo. A hippopotamus in a pool of water. Public domain stock photo.
A hippo in a body of water. Hippopotamus submerged water, animals.
A hippopotamus is swimming in the water / A hippo in a body of water / Animals public domain photography.
A large alligator floating in a body of water. Alligator head eye.
A large alligator is submerged in water with its head in the water / A gator in the water with its head sticking out of the water / Public domain stock photo of a ship.
A person in a diving suit and a helmet. Military diver navy.
A diver in a yellow and black wetsuit and a yellow helmet is working on a large metal pipe / A diver in a diving suit is using a device to check the water level public domain military photo.