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A recent underwater expedition picked up footage of a surprisingly familiar looking sponge and starfish.
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Footage posted earlier this year on Instagram appears to show a weird shape being carried along by the waves.
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A 54-year-old from Croatia has managed to break the world record for holding his breath underwater.
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An underwater salvage company is seeking legal permission to retrieve objects from inside the wreck.
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This remarkable object, which is believed to be a mass of squid eggs, was found in the waters off Norway's coast.
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A former marine ecologist is aiming to use underwater cameras to spot an elusive lake beast in Alaska.
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A deep sea research vessel has discovered a chain of underwater mountains that are teeming with life.
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The long-lost 300-year-old Spanish galleon was found with the help of an autonomous underwater vehicle.
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In a rare case of natural selection in modern humans, the free-diving Bajau people have developed a larger spleen.
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The 'Tolkienesque' landscape is made up of 26 underwater volcanoes buried beneath seabed sediment.
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Planetary scientist Alan Stern has suggested that some civilizations may live below a planet's surface.
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Members of the gloomy octopus species have created their own underwater settlement dubbed 'Octlantis'.
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Located off the coast of Vanuatu, this unique post office allows you to send postcards underwater.
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A new science video has revealed what the view is like inside the mouth of a gargantuan great white.
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A new video shows veteran free diver Guillaume Nery descending 131ft underwater on only one lungful of air.
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The museum contains a collection of 300 sculptural works by British artist Jason deCaires Taylor.
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Divers have discovered an underwater cave in the Czech Republic which descends to a depth of 1,325ft.
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An old camera fished up from the bottom of the sea was found to contain some rather remarkable footage.
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Underwater ruins off the Greek island of Zakynthos have turned out to be a geological phenomenon.
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The remarkable cephalopod was captured on camera off Hawaii by a remotely operated underwater vehicle.