Atlantic Poseidon Sea Slug

The Atlantic Poseidon Sea Slug is a small marine mollusk, only 3-8 centimeters, but an amazing creature of great intelligence in the ocean. First of all, it has a very beautiful appearance that seems to exist only in mythology (see pictures); secondly, it has advanced defense mechanisms. With a silvery back and a blue belly, the creature almost always floats on the surface of the water, and in order to avoid its enemies, it adopts an anti-concealment mechanism for self-protection. It adopts the "backstroke", with the blue belly on top and the silver back facing downwards. When viewed from above, the blue color blends with the ocean, and when viewed from below, the back glows with a silver light, which makes it difficult to be detected. Not only that, but it can also take the "weapons" of other creatures for itself and use them for its own purposes. It feeds on other pelagic creatures, including poisonous stinging cells, which are harmful to humans, but not only is it not afraid of the stinging cells of its prey, it can even swallow these cells into its body, eventually becoming its own weapon. Even more amazingly, it is hermaphroditic, and once mated, both sides can lay eggs.

Chinese water deer

The Chinese water deer, commonly known as the roe deer, is the most primitive of the small deer family, native to eastern China and the Korean Peninsula, and is known as the water deer because of its great love of swimming. The water deer is also very peculiar in appearance, having no antlers but a pair of exposed fangs, which are its weapons. The water deer reproduces much like humans, mating every month and carrying a litter for 8 months. Although the origin is China, it is eventually imported from the UK. There is no doubt that the Chinese water deer originated from China. At that time, due to the delicious meat of the water deer, it was on the verge of extinction, and after more than 100 years, it was finally imported from England. The water deer introduced from the UK was introduced in 1870 and reproduced to survive until now, and nowadays the water deer lives in Shanghai's forest park, which belongs to the second class of national protected animals. Not only does it make people reflect on the fact that the water deer introduced to Britain has survived to this day, but as the country of origin, China is on the verge of extinction.

Sword-nosed shark

The sword-nosed shark is a very rare deep-sea species with a family history of about 125 million years, and is known as a "living fossil". It has a long, flat "nose" that is hard to see at first glance. No one understands why it has such a long snout, which seems to have no benefit for hunting. Some experts speculate that it may have something to do with the function of detecting prey. They generally live at depths of 270-960 meters and have also been found at depths of more than 1,000 meters, making them not easy to catch. Swordnose sharks that live in the deep sea do not appear to be an endangered species and have not been known to blow themselves up once they come ashore.