Crabs are found in all of the world's oceans, while many crabs live in fresh water and on land, particularly in tropical regions. Crabs vary in size from the pea crab, a few millimetres wide, to the Japanese spider crab, with a leg span of up to 4 metres (13 ft).
Pea crabs are the smallest of all crabs and, not surprisingly, are about the size of a pea.  Some crabs, such as the spider crab, disguise themselves by attaching living things, such as anemones, to their bodies. These living decorations not only camouflage the crab, but the anemones’ stings also discourage predators. 
Crabs are omnivores (eats both plants and animals) and some feed primarily on algae, others feed on mollusks, worms, crustaceans, fungi, bacteria, and organic non-living material. 1 million tons of crabs are being eaten annually in restaurants and homes all over the world.
Where Do Crabs Live | Crab Facts For Kids. Crabs are found in almost all the oceanic waters of the world. True crabs, of which about 4,500 species are extensively distributed worldwide, have a range from mudflats to abyssal depths of around 3500 meters to 12,000 feet.
Crabs live in all the world's oceans, in fresh water, and on land. There are over 4500 species of crabs. Other animals with similar names such as hermit crabs, king crabs, porcelain crabs, horseshoe crabs and crab lice, are not true crabs. Crabs usually have a distinct sideways walk.
Crab is a creature that is found residing, alongside beaches, in almost all the countries of the world. It is omnivorous in nature and feeds on a diet comprising of algae, mollusks, worms, other crustaceans, fungi, bacteria and detritus, etc. Being crustaceans, of the infraorder Brachyura, crabs usually inhabit brackish water i.e. a mix of fresh and saline water.
Crab Facts - Facts About Crabs Crabs live on land and in all the waters of the world and especially in the tropical regions. They spend most of their time in freshwater.
The Pea Crab is the smallest known species. It measures between 0.27 and 0.47 inches long. The Japanese Spider Crab is the biggest, measuring about 12 feet between its claws! Crabs have an “exoskeleton” made of chitin. It protects their soft tissue. Crabs walk and swim sideways. Crabs eat both meat and plants, making them omnivores.
All About Crabs Catching, cooking and eating crabs is a major part of the Chesapeake Bay area tradition. It’s all been done in essentially the same way for centuries. The best part is that you can do it all yourself—catch your own crabs, steam them or make them into crab cakes and eat them on … Continue reading "All About Crabs"
Crab is an invertebrate that belongs to the crustacean family. There are over 4500 species of crabs and most of them live in the coastal areas of salty, fresh or brackish water (mix of fresh and salty water). Besides aquatic species, some crabs are semi-terrestrial or terrestrial (they live on the land). They inhabit sandy areas with stones and rocks.