Wrasses use rocks as anvils
A wrasse unearths a bivalve, carries it several meters, and smashes its shell against a rock with sideways blows of its head. The broken shell exposes the edible contents.
How wrasses use rocks as anvils
A wrasse unearths a bivalve, carries it several meters, and smashes its shell against a rock with sideways blows of its head. The broken shell exposes the edible contents.