Sample dissections available:

Metridium - sea anenome

Aurelia - jellyfish

Cerebratulus - ribbon worm

Nematomorph - horse hair worm

Ascaris - intestinal roundworm

Acanthocephala - spiny-headed worm

Lumbricus - earthworm

Amphotrite - annelid worm

Nereis - clam worm

Hirudo medicinalis - leech

Arenicola - lugworm

Romalea - grasshopper

Pycnogonida - sea spider

Decapoda - crayfish

Mercenaria - clam

Helix - snail

Loligo - squid

Asteria - sea star

Strongylorhyncus - sea urchin

Thyone - sea cucumber

Ophioderma - brittle star

Echinarachnius - sand dollar

Sipuncula - peanut worms

Limulus - horseshoe crab

Terebratulina - articluate brachipod

Lingula - inarticulate brachiopod