Dear Deepak Samuel Vijay Kumar

It is very difficult to identify the species just seeing photos. Maybe the following information can be useful to you.

 1- Buccinidae, maybe a juvenile specimen of Buccinum glaciale Linnaeus, 1761 ..!

2- (The specimen on left top corner) seems as (Cochliopidae) Semisalsa cf. dalmatica Radoman, 1974

2- (The specimen on right bottom) is can be Pseudobithynia sp.

3- Need to examine it in detail, as if Chrysallida sp.

4- Buccinidae, similar of Pareuthria cf. powelli Cernohorsky, 1977

5 - Acteocina cf. mucronata (Philippi, 1849)

 Best wishes

Dear Dr. Levent Artuz,

thank you so much for the information! I completely agree with you with regard to the difficulty in identification based on images. The information provided by you will be a starting point to work into morphological details.

Thank you

Best regards

Deepak

Dear Deepak,

Could you indicate where these animals were collected? This may help suggest resources that might help with their identification.

Kind regards,

Yes Ian! 

these were collected from seagrass beds along the northeast coast of India, Bay of Bengal

Best

Deepak