11/09/2026
During my three weeks in Alaska, I was incredibly fortunate to witness a whole variety of humpback whale behaviour - from spectacular breaches and powerful chin slaps to tail slapping and the extraordinary spectacle of bubble-net feeding.
🐋 Whales have a lot to say without making a sound...
Many of these dramatic surface behaviours are forms of 'non-verbal communication'. A breach, tail slap or pectoral-fin slap creates an enormous splash and sends vibrations through the water. Scientists believe these behaviours can serve several purposes - including signalling to other whales, maintaining social contact and, depending on the situation, displaying excitement, agitation or simply interacting with others.
And then there's one of my favourite whale words… the peduncle!
Or more specifically the 'caudal peduncle' is the incredibly powerful muscular section of the whale's body immediately before the tail flukes. It provides much of the force needed to drive those enormous flukes up and down through the water. It is widely considered the largest and most powerful muscular structure in the animal kingdom.
Humpbacks can also perform a peduncle throw, where they swing the rear of the body and tail sideways with tremendous force, often crashing it down onto the surface - I hope this photograph captures that power perfectly 📸