What do sharks fear most?

Sharks are afraid of dolphins, which are faster and more flexible than sharks. It is difficult for sharks to bite dolphins, but dolphins can easily attack sharks.

Sharks are extremely cautious and usually hunt alone. Except in mating season, they seldom get together, but after mating season, they will go their separate ways. Unlike the king shark in the sea, dolphins usually move in groups in the sea to take care of the elderly or young individuals in the middle, so they hunt together and resist the enemy.

Dolphins will surround the attacker and hit the shark's body with their solid kisses. Dolphins are very clever. The main target of their attack is the gill fissure in the most vulnerable part of the shark. The reason why sharks are knocked down by a group of dolphins is that the impact of a group of dolphins is much greater than that of sharks, and dolphins are more flexible.

Extended data:

Sharks are spindle-shaped and swim very fast.

Have a keen sense of smell. 1m long shark's olfactory nerve endings can reach 4842cm2. It has unique teeth, can cut, tear and crush food, and is very sharp. When the layman's teeth fall off and the expert's spare teeth move outward, it is easy to bite the cable as thick as a finger.

In fact, there are only more than 20 kinds of sharks that harm humans. The fiercest sharks are man-eating sharks (also called man-eating sharks), helper sharks (also called squid) and low-fin sharks (also called bull-eye squid), which are widely distributed in warm temperate waters and sometimes enter estuaries.