What are the macroscopic organisms in the deep sea, and what are the creatures in the deep sea

1.Sperm Whale Sperm Whale The sperm whale is a typical deep-sea diver. They are able to dive thousands of feet to the bottom of the ocean and prey on deep-sea squid and fish.

In the life of a sperm whale, more than 90% of the time the sperm whale dives into the abyss. Scientists believe that the deep-sea area is not inferior to the tropical rainforest in terms of biodiversity. Scientific research has found that under the sea at a depth of several thousand meters, there are all kinds of strange creatures living there, which are perfectly adapted to this extreme environment.

2.Coelacanth Coelacanth This bizarre-looking species is one of the oldest fish in the world and is often considered a living fossil. Coelacanths were once thought to have gone extinct as early as 65 million years ago.

However, a fisherman once caught a coelacanth off the coast of South Africa in 1938. In the 50s of the 20th century, a second coelacanth was caught off the eastern coast of Africa. Since then, live coelacanths have been found many times and photographed for documentation.

Coelacanth are found mainly in the Indian Ocean, from the southwest coast of Africa to Indonesia. Coelacanths live at a depth of about 700 meters. 3.

Japanese Giant Spider Crab Japanese Giant Spider Crab The Japanese giant spider crab lives at a depth of about 400 meters. It is the largest crab in the world, with extended legs reaching up to 4 meters in length. Since giant spider crabs are edible, the fishing of giant spider crabs has become an important part of the aquaculture industry.

In order to protect this species, fishing operations are strictly prohibited during the spawning period of the giant spider crab. During the breeding season, giant spider crabs swim into shallower waters, making them easier to catch. 4.

Black Forktooth Fish Black Forktooth Fish Black Forktooth Fish are famous for the fact that they can swallow other fish that are much larger than themselves.

Deep-sea organisms can be divided into three categories: planktonic, swimming, and benthic according to their lifestyles.

1. Plankton.

It is composed of some species such as bacteria, protozoa, coelenterates, crustaceans, hairy-jawed animals, etc., and the number of species and organisms is smaller. The number of organisms usually decreases significantly with increasing water depth. Deep-sea zooplankton are mostly omnivorous or carnivorous.

Many marine zooplankton have a diurnal vertical migration habit, which usually occurs by rising to the upper or surface layer to feed at night, and sinking to the depths of the ocean during the day, ranging from tens of meters to hundreds of meters. Zooplankton feed on phytoplankton at night, and after sinking to the deep layer during the day, their own respiratory metabolism, excretion, and predation by animals with higher trophic levels all lead to an important way for the transport of organic carbon from the upper layer to the deep layer.

2. Swimming creatures.

Swimming creatures in the deep sea are mainly fish, followed by squid, octopus and shrimp.

The origin of the Soviet scholars Andreyetsev and Lasy deep-sea fish divided it into two categories: primary (native) deep-sea fish and secondary (secondary) deep-sea fish. Primary deep-sea fish refer to those ancient deep-sea fish and oceanic deep-sea fish, this group of fish has been adapted to deep-sea life since ancient times, belongs to the family and suborder, and is composed of a wide range of species (such as horned shark whale suborder, lantern fish, cyst-throated fish).

3. Benthic organisms.

Deep-sea benthic organisms refer to the organisms that live on the bottom of the deep sea and cannot swim in the water for a long time, mainly including microbenthic organisms with an individual size of 2 40 m, small benthic organisms with an individual size of 42 1000 m and large benthic organisms with an individual size of more than 1000 m, the deep benthic biomass decreases with the water depth, there are more benthic species at the water depth of 2000 3000 m, and there are still benthic organisms in the abyss above 10,000 meters. Isopods, telopods, gills and sea cucumbers, etc.

Giant creatures of the deep sea include blue whales, great white sharks, giant squid, giant clams, elephant seals, and Japanese spider crabs.

The abyssal area (Song's cherry blossom abyssalregion) refers to the sea area with a water depth of about 2000 to 5000 meters. The trench can descend to a depth of 6,000 meters. These very deep areas of wild bushes are sometimes referred to as "ultra-abyssal zones".

The deep-sea zone was once called the largest ecological unit in the world.