Megabalanus tintinnabulum
Scientific Name: Megabalanus tintinnabulum
, English Name: Titan Acorn Barnacle, Local Name: Not Known; Family: Balanidae
Amphibalanus variegatus
Scientific Name: Amphibalanus variegatus, English Name: Not Known, Local Name: Not Known; Family: Balanidae
Amphibalanus improvisus
Scientific Name: Amphibalanus improvisus, English Name: Bay barnacle, Local Name: Not Known; Family: Balanidae
Amphibalanus reticulatus
Scientific Name: Amphibalanus reticulatus, English Name: Reticulated barnacle , Local Name: Not Known; Family: Balanidae
Amphibalanus amphitrite
Scientific Name: Amphibalanus amphitrite, English Name: Striped Barnacle, Purple Acorn Barnacle, Local Name: Not Known; Family: Balanidae
Carcinoscorpius rotundicauda
Scientific Name: Carcinoscorpius rotundicauda, English Name: Mangrove Horseshoe Crab, Sundarban Mangrove Horseshoe Crab., Local Name: Raj Kakra (রাজ কাঁকড়া), Sagar Kakra (সাগর কাঁকড়া).; Family: Limulidae
Tachypleus gigas
Scientific Name: Tachypleus gigas, English Name: Southeast Asian horseshoe crab, Local Name: Kakra (কাঁকড়া); Family: Limulidae
Coenobita violascens
Scientific Name: Coenobita violascens, English Name: Hermit crabs, Local Name: Not Known; Family: Coenobitidae
Diogenes rectimanus
Scientific Name: Diogenes rectimanus, English Name: Hermit crabs, Local Name: Not Known; Family: Diogenidae