Harbor porpoise ID features?

• A. Large dorsal fin, aggressive
• B. Small, triangular fin, shy
• C. Bright orange color
• D. Long snout

Answer: (B)

Harbor porpoises are small cetaceans with a relatively tiny, triangular dorsal fin and a tendency to stay low at the surface, often diving quickly and staying shy around boats. These clues—small body size, a small triangular dorsal fin, and elusive, cautious behavior—are the best indicators for identifying harbor porpoises in coastal waters. Larger dorsal fins are typical of bigger dolphins, bright orange coloring isn’t a natural feature of harbor porpoises, and they don’t have long snouts, which helps distinguish them from other species.