Some animals enjoy a high reputation among humans. They are often seen as symbols of tenderness, wisdom, or loyalty. Examples include koalas, elephants, and penguins.

But in some cases the opposite is true. Some animals may have such a bad reputation that people are afraid to hear their names, such as killer whales. Here's what we know about killer whales.

Killer whales are found throughout the world's oceans. They can live in the hot seas around the equator and in the cold poles. Their body temperature remains a constant 36 degrees Celsius, whether in the heat of the equator or in the icy polar waters.

Killer whales, like other mammals that live in the ocean, have no gills and rely on their lungs to breathe. So, killer whales need to come up to the surface to get some fresh air.

The nostrils of killer whales are on the right side of their heads, and when they surface, they automatically open, releasing a bubble of air along with a breath of fresh air. When this gas meets cold air, it becomes a column of water.

Although they are called killer whales, the killer whale is part of the family dolphin family. In other words, they are close relatives of dolphins. But their appearance is easy to bring confusion.

Compared with friendly dolphins, they seem to have more in common with the terrible white whale.

The killer whale is the "language master" of whales. They can make 62 different sounds, and each sound has a different meaning. They are also highly social animals, and they are the most stable families in the animal world.

Some of their complex social behaviors, hunting skills, and sound communication are considered evidence that killer whales have their own culture.

The killer whale family has a complex communication system, including a variety of voices, including singing and whistling.

Because the same group of members spent a lot of time together, they began to build their own sound code to identify them. And, this is something other members cannot understand.

Because killer whales and dolphins are close relatives, the IQ of killer whales is definitely outstanding in the animal world. The IQ of the killer whale is equivalent to the IQ of 15 -year -old mankind.

They will adopt a team hunting, and then use the forehead to transmit ultrasound to communicate to formulate an offensive plan against predatory prey.

When they face a group of small fish, the killer whale surrounds the fish in a circle and then surrounds them. Later, the killer whale took turns in the fish group to eat a meal. Even if it is a separate predation, the killer whale has excellent offensive means.

When predating sharks, killer whales will use their tail fins to pat the sea to make the seawater form a vortex and rise, forcing the shark to jump out of the water.

At this time, the killer whale rushed out of the sea to hit the shark with the body, making it difficult for the shark's muscles to move or even coma.

Such smart offensive means are very rare in the animal world. Therefore, they can be at the top of the food chain in the ocean.