In Episode 1, 45:17, the solar energy captured by phytoplankton and converted into living tissue is transmitted through the food chain, and it ends up at the farthest place from the sun: the bottom of the deep ocean. In Episode 2, 12:43, the monkfish in the deep sea glows in the dark, which is produced by bacteria that permanently live in the structure of the fishing rod. At 21:32, the sun’s daily cycle has a profound impact on life in the deep sea. After the sun goes down, it will trigger the largest migration of organisms on the planet. Every night, billions of kilograms of animals rise from the dark zone to the rich shallow water. Small herbivores bear the brunt, looking for tiny plants in shallow, sunny waters. Sunlight has a direct effect several hundred meters above the ocean. Only here can photosynthesis take place and you can see thriving coral reefs. Leaving this sparse but vigorous ecosystem and heading to the outside of the coral reef, you will enter a more scarce world, down 150 meters, photosynthesis cannot happen here, you can't find plants, only animals, the animals here They are used to catching ocean snow, which is the molecules of dead animals and plants floating from above. Moreover, the energy they rely on is extracted from the sun by organic matter living on the sea surface.
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