Humpback Whale “Fin”

Humpback whale Fin?

This is a humpback whale on its side waving a pectoral fin. This flipper is very long (five meters/yards), between 1/4 and 1/3 the length of its body, and has large knobs on the leading edge. From a distance it can be confused with an orca dorsal fin, which is tomorrow’s post.