What feature helps identify a humpback whale?

• A. Bright red dorsal fin
• B. Very short flippers
• C. Long pectoral fins
• D. White body color

Answer: (C)

Long front fins, or pectoral fins, are the most noticeable clue for recognizing a humpback. Humpbacks have the longest pectoral fins of any large whale, often reaching up to about a third of their body length. That striking proportion makes them stand out when you’re observing from a kayak, helping you distinguish them from other baleen whales that have shorter fins. The other descriptions don’t fit humpbacks: a bright red dorsal fin isn’t something you’d see on them, their flippers aren’t very short, and their bodies aren’t white overall. So the unusually long pectoral fins are the clearest identifying feature.