Thunfische – Tuna
Thunfische – Tuna
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Tunas belong to the large predatory fish, but are also a popular food fish themselves. They usually live in schools of equally large specimens. For propulsion, the trunk muscles transfer the power to the stiff, crescent-shaped caudal fin, which serves for propulsion.

Excerpt from "Life in the Red Sea." iBooks.

Size: 7,0 MB
Version: 1
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