What do you know about the creatures which are in between plants and animals ?

Which creatures live for ever ?

Which is the world?s largest living creature? (1) Indian elephant (2) Blue whale (3) African elephant (4) Giant tortoise

The blue coloured blood of this marine creature is used to test safety of drugs. It is found abundantly along Orissa coast?. The given description fits 1 Scorpion 2 Sepia 3 Cattle fish 4 Horse shoe crab