October 1, 2018 — Whale researchers are spotting a trend in the Hawaiian Islands — a decline in humpback whale sightings.
Not only are there fewer sightings, fewer male Hawaiian humpback whales have been recorded singing, and the number of mother-calf pairs has been diminishing for the past three seasons, according to the researchers. While the trend has been consistent over the past three years, the scientists refrained from sounding an alarm about the whales disappearing as a new season is around the corner.
“They’re not all gone,” said Ed Lyman, who is with the Hawaiian Islands Humpback Whale National Marine Sanctuary. “We are seeing indications of fewer whales near the islands where our effort is … There are still plenty of whales out there.”
The peak of the season is usually between January and March, when thousands of humpback whales migrate from Alaska to Hawaii to mate, calve and nurse their young, although they can be spotted in November or earlier, and stay as late as May.
Lyman, a researcher and the sanctuary’s whale entanglement response coordinator, said for him, the first signs of the decline were in late December 2015.
That’s when he got calls from whale-watching tour operators on Hawaii island, inquiring about their late arrival. Lyman reached out to tour operators on other islands, as well, and found them saying the same thing — the whales were late, and there were fewer sightings. He got the same reports from contacts in Mexico.
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