To go with National Crab Fest Day, which was today the 14th September.
Crab Trivia
Some species of crabs live up to 100 years, if a fisherman doesn't catch them first.
Worldwide, we consume over 1.5 million tons per year.
Crabs have 10 limbs. As a result, they are often called the "Spider of the sea". 
They can lay 2,000 eggs at a time. 
The shell is their skeleton on outside of its body. It is called caraspace. 
There are over 5,000 species.
There are salt water and fresh water varieties. 
A group of crabs is called a "cast". 
They range in size from 5 inches in diameter to 13 feet across! 
All crabs have two very strong front claws (pincers). They use them like a vise for crushing objects. 
Crabs communicate by flapping their pincers and drumming their claws. 
Crabs can move in any direction. When a claw or leg is severed, it can regenerate over time.