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A sea algae boom has been credited with the rise of the first complex life forms in Earth's distant past.
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The space agency has discovered all the crucial ingredients for life in the oceans of Saturn's icy moon.
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The space agency will be holding a press briefing on Thursday about 'the search for life beyond Earth'.
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New data from Cassini has suggested that Enceladus' liquid water ocean may be very close to its surface.
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Scientists have revealed that Mars was much wetter and therefore more habitable than previously thought.
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Scientists have found strong evidence of an ancient continent hidden deep beneath the Indian Ocean.
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Scientists have warned that global sea levels could continue to rise over the coming decades.
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A strange-looking invertebrate has been spotted by a deep-sea ROV over a century after its discovery.
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It is looking increasingly likely that the dwarf planet is home to a vast subterranean ocean of water.
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Palaeontologists have unearthed the fossil remains of a gigantic Cretaceous-era ocean predator.
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An extremely peculiar creature with a bulbous transparent head has been spotted by a diver in Bali.
7
A diver believes that he may have discovered a missing nuclear weapon at the bottom of the Arctic Ocean.
6
New research has suggested that another of Saturn's moons is home to a subsurface ocean of liquid water.
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The find could make it much easier to search for evidence of extraterrestrial life in Europa's oceans.
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Scientists believe that the dwarf planet's interior may be filled with large quantities of liquid water.
7
Scientists are set to embark on an ambitious mission to find out what is living beneath the ocean floor.
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These carnivorous ocean-dwellers are now thought to be the longest-lived vertebrates on the planet.
4
The Okeanos Explorer vessel has revealed an undersea realm filled with weird and wonderful life forms.
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Scientists have filmed an extremely rare type of fish more than 2,500ft below the surface of the sea.
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Divers have discovered an ancient, minivan-sized sea sponge in an ocean ridge off the coast of Hawaii.