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Asked by 929curm25 to Matthew, K, Jacque, Hazel, Fiona, Daniel on 5 Mar 2018.
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Fiona Macfarlane answered on 5 Mar 2018:
I’m not sure. I think it would be very dark so the creatures/plants that live down there will probably be very different to the ones we see in shallower water.
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K Sasitharan answered on 7 Mar 2018:
I guess the ocean bed will consist of sediments and of living organisms that thrives in the absence of sunlight.
Some deep sea fishes include Stout black smelt, Tripod fish, Lantern fish etc.
The ocean bed would also have decaying scraps of dead organisms which sink to the bottom from the upper layers of ocean.
The scientists who have gone to the ocean deep have always said that it is nothing like the life on earth. It resembled more to the kind of life possible on other planets. If life is possible in the ocean bed with complete absence of sunlight, it just makes it more believable in life outside earth.
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Hazel Gibson answered on 7 Mar 2018:
A lot of the bottom of the ocean has nothing on it – large parts of it are pretty empty. But some of the bottom of the ocean has amazing things that scientists believe are pretty close to alien life – they are called extremophiles (creatures that love extreme environments). This includes tiny bacteria like creatures that live so far underwater there is no natural light, so instead of using light from the sun to ‘photo’synthesise, they use chemicals from underwater volcanoes to make energy – they ‘chemo’synthesise! They are then fed upon by other creatures that are not extremophiles (like crabs) but even they live so deep they have never seen sunlight!! There are also organisms which live in brine pools at the bottom of the ocean – like a lake under the sea – that are so salty and full of methane that anything that swims in there dies, except for some species of tube worm and shrimp specially evolved to live in this deadly environment!
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