Architectonica nobilis
Scientific Name: Architectonica nobilis, English Name: Common sundial shell, Local Name: Shamuk (শামুক); Family: Architectonicidae
Architectonica laevigata
Scientific Name: Architectonica laevigata, English Name: Small Sundial, Smooth Sundial, Local Name: Sati Shamuk (সাতি শামুক); Family: Architectonicidae
Architectonica maxima
Scientific Name: Architectonica maxima, English Name: Giant sundial shell, Local Name: Shamuk (শামুক); Family: Architectonicidae
Acmaea achates
Scientific Name: Acmaea achates, English Name: Banded Limpet, Local Name: Chhata Shamuk (ছাতা শামুক); Family: Acmaeidae
Loimia medusa
Scientific Name: Loimia medusa, English Name: Medusa worm, Local Name: Somudra Bicha (সমুদ্র বিছা), Somudra Changa (সমুদ্র ছ্যাংগা) ; Family: Terebellidae
Hermundura annandalei
Scientific Name: Hermundura annandalei, English Name: Clamworm, Local Name: Somudra Bicha (সমুদ্র বিছা), Somudra Changa (সমুদ্র ছ্যাংগা) ; Family: Pilargidae
Phyllodoce schmardaei
Scientific Name: Phyllodoce schmardaei, English Name: Clamworm, Local Name: Somudra Bicha (সমুদ্র বিছা), Somudra Changa (সমুদ্র ছ্যাংগা) ; Family: Phyllodocidae
Diopatra neapolitana
Scientific Name: Diopatra neapolitana, English Name: Solitary tube worm, Local Name: Somudra Bicha (সমুদ্র বিছা), Somudra Changa (সমুদ্র ছ্যাংগা) ; Family: Onuphidae
Diopatra cuprea
Scientific Name: Diopatra cuprea, English Name: Clamworm, Local Name: Somudra Bicha (সমুদ্র বিছা), Somudra Changa (সমুদ্র ছ্যাংগা) ; Family: Onuphidae
Tylonereis fauveli
Scientific Name: Tylonereis fauveli, English Name: Clamworm, Local Name: Somudra Bicha (সমুদ্র বিছা), Somudra Changa (সমুদ্র ছ্যাংগা) ; Family: Nereididae