Answers

2015-02-21T10:08:56+05:30
'adult sponges and hydra' i.e.sessile (animals that cannot move,they r fixed on to something)
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2015-02-22T17:50:56+05:30
Barnacle (a crustacean like shrimp and crabs!) 
Tridacna spp, the giant clam
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