1) Crabs are found all over the world and are eaten for their meat. There are over 6,000 species of crabs.
2) The Japanese spider crab (Macrocheira kaempferi) is a type of marine crab found in Japan's oceans. It is the arthropod with the longest leg span.
3) Crab is high in protein, which is essential for muscle growth and maintenance. Crab is abundant in omega-3 fatty acids, vitamin B12, and selenium, among other nutrients.
4) Crabs can walk in any direction, although they prefer to walk and run in the same direction.
5) Horseshoe crab fossils have been dated to be 445 million years old. They coevolved with other primitive arthropods called trilobites, a long-extinct close relative of the horseshoe crab, in the shallow oceans of the Paleozoic Era (540-248 million years ago).
6) Soft shell crabs are crabs that are moulting, which occurs when the crab's hard shell grows by roughly 30%. They must remove their previous shell, which makes them squishy for around 2 to 3 hours after they escape it.
7) A little crab's lifespan is typically 3-4 years, although larger species, such as the giant Japanese spider crab, can live up to 100 years.
8) On the top of the animal's carapace, there are seven eyes; the lateral eyes are the most visible and are compound in design.
9) Female crabs have the ability to release 1000 to 2000 eggs all at once.
10) Crabs have 10 legs and are classified as decapods.
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