1. The world's largest and fiercest crab - the killer crab
The largest crab in the world is the Japanese giant crab, also known as the Gan's giant crab, also known as the giant spider crab. This crab is also the largest crustacean. Their bodies resemble large plates, and their feet are I meters long.
The largest known Japanese crab is 3.4 meters long, 80 years old, its forelimbs are thicker than a baby's arm, and it has 10 feet, each with a very pointed tail. The Japanese crab lives in the 500-meter-deep sea off the coast of Japan and the northeast corner of Taiwan, with an average temperature of 10 to 15 degrees Celsius in silt terrain on the seabed. It feeds on sharks, hagfish, crabs, and various fish. The meat of this crab can be eaten, but it has a fierce temperament and likes to chase people dressed in flowers.
This crab is also called a killer crab. Since 1990, 34 fishermen and 26 tourists have been buried in the belly of a murderous crab in the Coastal Area of Yokohama, Japan alone. An adult killer crab is generally 30 cm wide, but the claws can be extended into a round face with a diameter of 3 meters, and the largest can reach 3.7 meters. Biologists have investigated and believed that the largest crab killer crab is evolved from spider crabs, spider crabs are not too large, they may be affected by deep-sea nuclear waste, and they have undergone rapid changes.
2. The world's most discolored crab - the tidal crab
The tide crab, also known as the "call crab", is trapezoidal, wide in front and narrow in the back, narrow in the forehead, wide in the eye socket, and slender in the stalk. One of the males is always much larger than the other, and the larger is used for mating, very large, even larger than the body, and weighs almost half the whole, as if carrying a violin. The small jaws are very small and are used for feeding (called feeding folds). If the male loses its large jaw, a small fat is grown in the original place, and the original small jaw grows into a large fat to replace the lost large jaw. The two females are small and symmetrical, with spoon-shaped knuckles, both for feeding.
3. The world's smallest crab - bean crab
Bean crab is a small crab living in the shallow sea, about 2 cm in size, called a dwarf among crabs, and shaped like a small bean, so it is called bean crab. They often cohabitate or parasitize with jellyfish, sea anemones, shellfish (oysters, river yao, scallops, mussels, etc.) and echinoderms. Bean crabs parasitize shellfish, often damage the gills of shellfish, external membranes, ovaries, digestive glands, etc., so that shellfish are emaciated, affecting the yield and quality of shellfish, it can be said that they are predators of shellfish artificial breeding.
4. The most poisonous crab in the world - Japanese copper cast hot cooked crab
Japanese copper cast hot cooked crab, the scientific name is Zosimus AENEUS. Tropical or subtropical coral reefs are generally used as living places. The shell of the crab is fan-shaped, mostly tea-brown, and has many distinct protrusions. The maximum shell is about 9 cm. It is called the most poisonous crab because its muscles contain tetrodotoxin and clam toxin. According to the relevant research measurement analysis, the toxic content of a copper cast hot cooked crab can poison at least 7 adults. It should be noted that because its shell also contains toxins, even if you do not eat it and just touch it with your hands, it may cause poisoning. To prevent accidents, care needs to be taken to wash your hands.
5. The world's most delicious crab - Alaskan king crab
Alaskan king crab, scientific name: Paralithodes camtschatica. Alaskan king crab is a very large crab species with an average weight of 10 kg and an average length of 220 mm. The shell can be up to 28 cm wide and the feet can be fully spread up to 1.8 m. King crabs originated from the ancestors of hermit crabs, so adult king crabs are asymmetrical. The asymmetry of the belly of the king crab is similar to that of the hermit crab, which is packed into a spiral-shaped shell. Most crabs move laterally, and Alaskan king crabs can move not only laterally but also vertically. Alaskan king crabs are found throughout the North Pacific Ocean, including the southern part of the Sea of Japan and north to the Kamchatka Peninsula. In the far south of the Queen Charlotte Islands on the west coast of North America, the northernmost island of Barrow, Alaska, also exists in the southeastern Bering Sea. Because of its delicious taste, the price of a crab is said to cost thousands of yuan.
6. The strongest crab in the world - coconut crab
Coconut crab, scientific name: Birgus latro. It is a hermit crab that can grow up to 1 meter long and is not only the largest terrestrial crab, but also the largest terrestrial arthropod. Large in size and weighing up to 6 kilograms, coconut crabs have a hard shell and two strong and powerful giant claws, which are masters of tree climbing, especially straight coconut trees, because they can peel off the hard coconut shells with strong double claws, so named after eating the coconut flesh in them.
7. The most beautiful crab in the world - soft coral crab
Soft coral crabs are small and particularly adept at camouflaging themselves, and they live in soft coral thickets and feed on plankton. As if their prickly coral-like appearance wasn't enough, soft coral crabs are known to occasionally ingest polyps and absorb their pigments to provide better camouflage protection. They spread throughout the Indian Ocean and the entire western Pacific Ocean, and soft coral crabs live in peace with other animals that live in corals.