Why are humpback whales disappearing in Hawaii?

Humpback whales often appear in the waters off Hawaii in December. But this year they have not appeared. What is the cause?

Every December often marks the beginning of the " humpback " whale activity season in the Hawaiian sea , but experts said that in December 2015 they had appeared later than the usual time but it was not clear. multiply.

Giant whales are one of the symbols of winter in island waters , and their appearance has provided income for tour companies. But officials at the Hawaiian Humpback Whale Research Agency said they had received a notice saying that very few whales appeared in the area last December.

"This needs to be taken care of. There must be something that has happened . We have observed a few whales," said Ed Lyman, resource protection coordinator and manager in Hawaii. know.

The first humpback whale image appears in Long Island Sound island area after two decades.(Source: AP).

Photographer Brian Powers, who spent many years photographing humpback whales from the air, said: "I've been searching for them for months and haven't seen a whale."

Around this time each year, more than 10,000 humpback whales migrate winter from Alaska to the warm waters off Hawaii to pair and give birth. They often gather on the highway and on the hillside to observe and photograph these giant and powerful marine animals.

Mr. Lyman said, the absence of the whale may be due to the fact that they are busy feeding in the North Sea because they are attracted to small fish , or maybe because the El Nino warms the sea , or because " population "whale population has increased.

"With a larger" population ", the whales are busy competing with each other to get more food sources, because they need energy reserves for a 2,000km long migration," he explained.

In September 2015, the Christian Science Guide reported, for the first time in two decades, humpback whales have appeared in Long Island Sound area off the coast of Stamford (USA). A joint study conducted by the World Wildlife Fund (WWF) and the Whale and Dolphins Conservation Society (WDCS) has shown that rising sea temperatures can also change whales to change their birth areas. live to maintain the optimal living environment.