A whale that circles from Hawaii to Alaska
The records trace nearly the whole migratory loop, adding up to well over 180,000 confirmed sightings, among the largest totals recorded for any whale along the US coast. Hawaii carries the heaviest counts from December through March, the season when humpback whales gather there to breed and calve in warm, sheltered water. Through spring, records shift toward the mainland Pacific coast. By late summer, California carries the largest share, as whales spread out to feed along the coast and up into Alaska before the cycle starts again.
Krill and small fish, not large prey
Despite its size, the humpback whale feeds on some of the smallest animals in the ocean: krill and small schooling fish such as herring, anchovy, capelin, and pollock. It often works in groups, driving these fish into tight balls near the surface before lunging through them. It’s a very different strategy from the tooth-based hunting used by dolphins and orcas.
Scavengers drawn to a giant
Orcas are the main recorded predator of humpback whales, typically targeting calves rather than healthy adults. A whale this large also feeds others after death. Gulls and even coastal wolves in parts of Alaska have been recorded scavenging on stranded humpback carcasses. It’s a reminder of how much a single whale can return to a coastal food web even after it’s gone.
A long-lived whale, slow to reproduce
Humpback whales mature around age four and a half, carry a pregnancy for close to a year, and typically raise a single calf at a time. A female usually calves once every two years. Some individuals have been recorded living past 90, among the longest lifespans documented for any whale.
Conservation
The IUCN lists the humpback whale as Least Concern, a major recovery from a species once pushed to the edge of extinction by commercial whaling. Today’s very high US record count reflects a genuinely recovered population. It also reflects a whale that spends enough time near the coast to be seen and reported often.
