The reason the 23-ton whale uses the fins to protect, rescues the female diver from the shark

The female diver Nan Hauser did not know that humpback whales weighing up to 23 tons turned her body into a shield, preventing tiger sharks from attacking.

According to Live Science, a 23-ton humpback whale swims towards a marine biologist and divers Nan Hauser off the Cook Islands in the southern Pacific last October.

The whale lifted Hauser out of the water with his big head. For the next 10 minutes, Hauser calmly swam around the whale while he occasionally rubbed his head against her, using his stomach to nudge and slam his hand over the strong, pectoral fins.

Video of a giant whale using the fins, saving female divers from sharks.

After returning to the research ship, Hauser knew very well, when the whale tried to protect himself from 4.5 meters long swimming nearby.

Hauser and his colleagues returned to the whole thing and shared on Facebook page on January 8.

"I've spent 28 years underwater with whales, and I've never seen a whale behave so strangely. It seems to be trying to get me to nestle under a giant pectoral fin" , Hauser recounted.

This is not the first time humpback whales intervene in sea-based ambushes.

In 2009, marine biologist Robert Pitman took a picture of a humpback Weddell humpback whale, protecting the seal in front of killer whales.

Pitman then analyzed 115 clashes between and between 1951 and 2012. He identified the act of saving seals that were not accidental.

Specifically, humpback whales often gather together and sometimes move over large distances to hinder the killer whales' attacks, regardless of the species they are hunting.

The protective behavior of humpback whales is more likely to come from their instincts to protect their offspring before predators, Pitman said.

The 23-ton humpback whale saves Hauser's life from tiger sharks.

"A simple behavior such as hindering assault whales can prevent young offspring from being killed and can sometimes help other species. Humpback whales' behaviors may be unintended" , Pitman commented.

Researchers again encountered similar humpback whales in May 2017. At that time, the whales rescued the young gray whales from the group of killer whales lurking in Monterey Bay, California, USA.

However, the video returned by Hauser is the first recorded case of humpback whales protecting people. Although the humpback whale's motive comes from instinctive instincts, Hauser feels extremely grateful for the animal.