In his most recent video, he chucked a GoPro in the water in the middle of the Ka Iwi Channel and heard “the loudest, most insane humpback whale singing” he’s ever heard. The post Mark ...

detections of blue whale singing soared. When krill numbers fell again, so did the whales’ songs. Unlike blue whales, humpback whales can also eat anchovies and sardines, and their choruses ...