Deep beneath the surface of the ocean, a remarkable display of maternal protection unfolds. A massive humpback whale swims calmly through the water while several sharks circle in the distance.

Despite the potential threat, the whale remains close to her calf, using her enormous body as a living shield. Moments like this highlight why humpback whales are often considered one of the most protective mothers in the animal kingdom.

Humpback whale calves are born after an 11- to 12-month pregnancy and weigh nearly one ton at birth. During their first months of life, they are extremely vulnerable and rely entirely on their mothers for protection, warmth, and nourishment.

Mother whales produce incredibly rich milk that allows the calves to grow rapidly. In fact, young humpbacks can gain up to 40 kilograms (about 90 pounds) every single day during the early stages of life.

But feeding is only part of the mother’s job. Protecting the calf from predators is equally important. Sharks and orcas may sometimes target young whales, especially when they are small and inexperienced.

When danger approaches, a humpback mother positions herself between the threat and her calf. She may also use her powerful tail and large pectoral fins to drive predators away.

Humpback whales are not only massive animals — reaching lengths of up to 16 meters — but they are also incredibly intelligent and aware of their surroundings. Mothers often guide their calves through long migrations, sometimes traveling thousands of kilometers between feeding and breeding grounds.

These journeys can last several months, and throughout the entire migration the calf remains close to its mother’s side.

Scenes like this reveal the powerful bond between whale mothers and their young. In the vast and unpredictable ocean, that bond is often the calf’s greatest protection.