CNN iReporters shared their best photos from under the sea. Here, a diver swims with a lemon shark at Tiger Beach in Nassau, Bahamas. This is a popular location for veteran divers looking to mingle with sharks without a cage.
Courtesy Boaz Meiri
Explorations into the deep —
Christmas tree worms get festive on top of brain coral in the waters of Cozumel, Mexico, where reefs offer divers an opportunity to photograph a variety of sea life.
Courtesy Christian Baki
Explorations into the deep —
Experienced diver Boaz Meiri wishes more people would give sharks a break. "Sharks are not what they remember from the movie 'Jaws,'" he said. Meiri photographed a large female tiger shark 19 feet underwater at Tiger Beach in Nassau, Bahamas.
Courtesy Boaz Meiri
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Bob Fish (yes, that's his real name) has been photographing his underwater adventures since 1994 and can't imagine stopping. In this shot, he caught a school of Bermuda chubs traveling together toward shallow water.
Courtesy Bob Fish
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This photo of a moon jellyfish floating gracefully in the waters of Key West, Florida, is one of Fish's favorite underwater shots he's taken.
Courtesy Bob Fish
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Jorge Gonzalez said, "Relax and be patient. You will be rewarded at the end with a beautiful photograph." Gonzalez photographed this lobster 45 feet underwater in Groton, Connecticut.
Courtesy Jorge Gonzalez
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Christian Baki's wife claims her spot on top of the Felipe Xicotencatl shipwreck during a dive in Cozumel, Mexico.
Courtesy Christian Baki
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Dolphins pass in Rangiroa, French Polynesia. "It was the craziest, most incredible underwater experience I've ever had," said Laura Waters. Rangiroa is the second largest atoll in the world.
Courtesy Laura Waters
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Meiri said, "Look for the small details when you dive. There are a lot of hidden creatures in the oceans." He captured this tomato clown fish in 2011 during a dive in Dauin, Philippines.
Courtesy Boaz Meiri
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Rich Muller has been a photographer for more than 40 years, but this photo shoot was his first time experimenting underwater. He spied a starfish on a small reef in Montego Bay, Jamaica.
Courtesy Rich Muller
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Trevor Murphy captured this photo of international surfing champion Mega Semadhi catching a wave at Padang Padang Beach in Bali, Indonesia. "The hardest thing about water photography is the preparation and timing ... there is no room for error," he said.
Courtesy Trevor Murphy
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A tiny octopus shows its elegant side during a nighttime dive in the waters of Anilao, Philippines. Simon Lorenz shot this photo about 20 feet below the surface.
Courtesy Simon Lorenz
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Beautiful creatures can be found in any ocean. This tube worm flexes underwater in Jamestown, Rhode Island.
Brains aren't just in your head. Professional photographer Matt Swinden snapped this macro shot of brain coral during a dive in Isla Mujeres, Mexico.
Courtesy Matt Swinden
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Huy Duong spotted a fellow diver while exploring the Second Cathedral in Lanai, Hawaii, last year. There are two famed caverns, the First and Second Cathedrals, which were formed from massive underwater lava tubes.
Courtesy Huy Duong
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A colorful Northern Anemone in the waters off of Gloucester, Massachusetts, waits to stun its prey with its stinging tentacles.
Courtesy Jorge Gonzalez
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Tom Logston said, "Every dive is a new adventure." Logston photographed this cuttlefish during a dive in the Bismarck Sea off Papua New Guinea. He's been diving since the '70s and was inspired by the exploration of Jacques Cousteau.
courtesy Tom Logston
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A sea of fish passed by Robert Ondrovic's lens during a 10-day excursion in the Galapagos Islands. Ondrovic said, "Sometimes you need to go below the surface rather than just scratch it to explore the wonders and beauty of nature."
Courtesy Robert Ondrovic
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Can you spot the two seahorses embracing in this seahorse garden? Bill Schwamle did in Cozumel, Mexico.
Click the double arrow to see more underwater photos.
Courtesy Bill Schwamlee
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During a dive at Stuart Cove in Nassau, Bahamas, Konstantinos Kohilas gets photo bombed during an underwater selfie by a shark.
Courtesy Konstantinos Kohilas
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A flamingo tongue sea snail feeds on coral in the waters surrounding Cozumel, Mexico.
Courtesy Christian Baki
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Ted Alan Stedman took this photo 60 feet underwater during a dive along the reefs of Bora Bora, French Polynesia.
Courtesy Ted Alan Stedman
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A macro shot of coral taken during a dive in Cozumel, Mexico, shows off an intricate pattern.
Courtesy Christian Baki
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A whip coral goby is photographed deep underwater, off the coast of Dauin, Philippines.
Courtesy Boaz Meiri
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Fish, who captured this puffer fish in Islamorada, Florida, said, "Get a few dives under your belt. Be sure you have good (or great) buoyancy control before doing anything."
Courtesy Bob Fish
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Baki said, "On my first dive trip, I had a small point and shoot camera, and this started me on my journey to learn underwater photography. I upgraded as I became more proficient." Baki captured this image of divers exploring the wreck of the USS Spiegel Grove about 70 feet underwater in Key Largo, Florida.
