1. Crabs are decapod crustaceans which have a very short tail
and are covered with a thick shell, or exoskeleton and are armed
with a single pair of claws. 2. Crabs are invertebrates (animals
without a backbone)… their exoskelton protects them from
predators and provides support for their bodies. 3. They have
flattened bodies, two feeler antennae, and two eyes located on
the end of stalks, and they are 10-legged animals that walk
sideways. 4. There are about 6,793 species of crab found in all
of the oceans around the world, in fresh water and there are
also some terrestrial crabs (ones that live entirely on land)…
many live in the tropical regions. 5. Crabs can be as small as
the pea crab which is only a few millimeters wide to the
Japanese spider crab which can have a leg span up to 4 meters
(about 13 feet). 6. Crabs have five pairs of legs (the first
pair are known as the claws). 7. Crabs are ominivores (eats both
plants and animals) and some feed primarily on algae, others
feed on mollusks, worms, crustace