Living within the substratum (e.g. sand).
Alpheus brevicristatus De Haan, 1844 - Teppo snapping shrimp
Callianassa japonica Ortmann, 1891 - Japanese ghost shrimp
Mictyris longicarpus - soldier crab
Ocypode ceratophthalmus
Scopimera intermedia - sand-bubbler crab
Uca vocans
Upogebia major (De Haan, 1841) - Japanese mud shrimp
Anadara granosa - bloody cockle
Anomalocardia (Anomalodiscus) squamosa (C. Linnaeus, 1758)
Ascobulla (Genus) Marcus, 1972
Capharca cornea - bloody cockle
Cyclina sinensis
Katalysia japonica
Meiomenia swedmarki Morse, 1979 - Pacific psammonworm
Natica (Genus) Scopoli, 1777
Paphia euglypta
Philine orientalis
Polinices (Genus) Montfort, 1810
Ruditapes philippinarum (A. Adams & Reeve, 1850) - Japanese littleneck
Chaetozone setosa Malmgren, 1867
Notomastus latericeus M. Sars, 1851
Perinereis cultrifera (Grube)
Scoloplos armiger (O.F. Müller)
Branchiostoma lanceolatum (P.S. Pallas, 1774) - amphioxus
Lineus (Genus) Sowerby, 1805
Megastygarctides christinae H.J. Guldberg & R.M. Kristensen, 2006
Megastygarctides gerdae H.J. Guldberg & R.M. Kristensen, 2006
Ochetostoma erythrogrammon Leuckart & Ruppell, 1828 - inn keeper worm
Sipunculus nudus C. Linnaeus, 1766
Spatangus purpureus Müller, 1776