Macoma balthica

are eaten by

• Global Biotic Interactions: Somateria mollissima (Linnaeus 1758) (Common Eider)
• Global Biotic Interactions: Pluvialis squatarola (Linnaeus 1758) (Grey Plover)
• Global Biotic Interactions: Rhinoptera bonasus (Mitchill 1815) (Cowfish)
• Global Biotic Interactions: Platichthys flesus (Linnaeus 1758) (Baltic Flounder)
• Global Biotic Interactions: Liopsetta glacialis (Pallas 1776) (Christmas Flounder)

are host of

• Global Biotic Interactions: Perkinsus chesapeaki
• Global Biotic Interactions: Perkinsus chesapeaki
• Global Biotic Interactions: Perkinsus chesapeaki
• Global Biotic Interactions: Perkinsus chesapeaki
• Global Biotic Interactions: Perkinsus chesapeaki

are parasitized by

• Global Biotic Interactions: Renicola roscovita
• Global Biotic Interactions: Gymnophalloides macomae (Lebour 1908) Scholz 2002
• Global Biotic Interactions: Gymnophallus somateriae (Levinsen 1881)
• Global Biotic Interactions: Parvatrema affine (Jameson & Nicoll 1913)
• Global Biotic Interactions: Perkinsus chesapeaki

are preyed upon by

• Global Biotic Interactions: Larus ridibundus (Black-headed gull)
• Global Biotic Interactions: Fundulus diaphanus (Lesueur 1817) (Banded Killifish)
• Global Biotic Interactions: Gasterosteus aculeatus Linnaeus 1758 (Banstickle)
• Global Biotic Interactions: Numenius arquata (Linnaeus 1758) (curlew, eurasian curlew)
• Global Biotic Interactions: Micropogonias undulatus (Linnaeus 1766) (Atlantic Croaker)

prey on

• Global Biotic Interactions: Microphallus claviformis (Brandes 1888)
• Global Biotic Interactions: Deropristis inflata (Molin 1859) Odhner 1902
• Global Biotic Interactions: Cryptocotyle jejuna (Nicoll 1907)
• Global Biotic Interactions: Gymnophallus choledochus Odhner 1900
• Global Biotic Interactions: Maritrema subdolum Jägerskiöld 1909