Discovery of life in solid rock deep beneath sea may inspire new search for life on Mars: Bacteria live in tiny clay-filled cracks in solid rock millions of years old — ScienceDaily

Newly discovered single-celled creatures living deep beneath the seafloor have provided clues about how to find life on Mars. These bacteria were discovered living in tiny cracks inside volcanic rocks after researchers perfected a new method cutting rocks into ultrathin slices to study under a microscope. Researchers estimate that the rock cracks are home to a community of bacteria as dense as that of the human gut, about 10 billion bacterial cells per cubic centimeter.
— Read on www.sciencedaily.com/releases/2020/04/200402080506.htm

What’s Hiding at the Most Solitary Place on Earth? The Deep Sea – YouTube

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Deep Sea Poster: shop.kurzgesagt.org

Sometimes the world feels boring. All the remote islands are visited, the arctic conquered, the dense jungles discovered. Except, there is still a place to explore: A wet deadly desert where mysterious creatures live in total darkness: The deep sea. Let us dive down.
— Read on m.youtube.com/watch

Deep Sea Gigantism Explained – YouTube

Deep Sea Gigantism (abyssal gigantism) is defined as the the tendency for deep-sea animals to grow to much larger sizes than their shallow water relatives.

Biologists still aren’t certain why it is that some abyssal creatures grow to these immense sizes, for we have still only scratched the surface of discovery in the deep. But there are many theories, which may help to shed light on this mystery of the oceanic deep.

A brilliant example to show that deep sea fauna does indeed follow this rule, is the mollusk group, gastropods, which includes slugs and snails. In the deep, many species that are near symmetrical to shallower varieties, grow to be huge. The deep sea isopod belongs to a group that rarely grows larger than a few inches in the shadows, but down here they can grow to half a metre in length, and weigh approximately 1.7 kilograms. This variety, the giant isopod, is found in the deep, cold waters of the Pacific Ocean, the Atlantic Ocean, and the Arctic Ocean.
— Read on m.youtube.com/watch