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About 850 species of crab are freshwater, terrestrial or semi-terrestrial species they are found throughout the world’s tropical and semi-tropical regions. Crabs typically walk sideways (a behaviour which gives us the word crabwise). This is because of the articulation of the legs which makes a sidelong gait more efficient. However, some crabs prefer to walk forwards or backwards, including raninids, Libinia emarginata and Mictyris platycheles. Some crabs, notably the Portunidae and Matutidae, are also capable of swimming. Crabs are mostly active animals with complex behaviour patterns. They can communicate by drumming or waving their pincers. Crabs tend to be aggressive towards one another and males often fight to gain access to females. On rocky seashores, where nearly all caves and crevices are occupied, crabs may also fight over hiding holes. Crabs are omnivores, feeding primarily on algae, and taking any other food, including molluscs, worms, other crustaceans, fungi, bacteria and detritus, depending on their availability and the crab species. For many crabs, a mixed diet of plant and animal matter results in the fastest growth and greatest fitness. Crabs are known to work together to provide food and protection for their family, and during mating season to find a comfortable spot for the female to release her eggs.
This little crab perched on a mussel shell was smaller than my thumb nail, it was fascinating to observe him with the empty shell in his claws. No dinner for him on that plate….
Panasonic Lumix DMC-FZ35 April 2011

Aww!! My Dinner Plate Is Empty!!

Crab Fingers!

This Is The End My Friends!