An Edible Crab Covered with Barnacles

Acorn barnacles (Balanus crenatus) make a home on the carapace of an edible crab (Cancer pagurus). Much of the Baltic suffers from eutrophication that leads to oxygen depletion. The algae blooms caused by eutrophication can give the water a green sheen. View other images of Baltic Sea life in a photo gallery of Oceana’s 2011 expedition.

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