King crab

King crab

Emperor crab, also known as stone crab or rock crab, is a crustacean of the stone crab family. It is not a true crab and is mainly distributed in cold sea areas. Named after its enormous size, it is known as the "King of Crabs". The king crab belongs to the deep-sea crab class, with a survival depth of up to 850 meters and a survival water temperature of 2-5 ℃. The minimum water temperature at which the king crab can survive is 1.4 ℃. Due to their large size and delicious meat, many species are widely caught as food, among which the most common is the Kamchatka stone crab.
Giant Scorpion

Giant Scorpion

Giant scorpions are a type of scorpion from the Carboniferous period, with a body length exceeding one foot. They evolved from sea scorpions and can grow up to 1-3 meters in length. They are very similar to modern scorpions, with huge pincers and tail spines. Giant scorpions feed on giant spiders and arthropods. They should first use their tail spines to kill their prey, and then use their huge pincers to tear them apart. Later, it became extinct due to insufficient oxygen.