Blue Swimmer Crab

Thanks Ashish and Gerardo..

Hi Christiane I have corrected the Binomial ID space in your favor.

I just check and is very interesting thanks Chritiane!

A friend just told me that it is a Blue Swimmer Crabs, also known as sand crabs or blue manna crabs, are swimming crabs that have their last pair of legs modified to act as paddles. Their claws are long and slender and the shell is rough in texture. Adult crabs are frequently found in large numbers in shallow bays and estuaries, particularly during the summer months. Blue swimmer crabs are highly regarded for their taste. (FISHERMAN!!)

Check Callinectes sapidus
http://en.wikipedia.org/wiki/Callinectes...

It look like a soft shell crab but i'm not sure if is the same species in Australia

Thanks Ashish.. I will have a look..

Look like one of following Marine Crab family..
http://en.wikipedia.org/wiki/Portunidae

Marine Crab.