The main reason why killer whales are afraid of sperm whales is that sperm whales are very large toothed whales. A mature sperm whale can weigh up to 40 tons. The killer whale has only reached a weight of 10 tons, so it is more afraid of the sperm whale.

Although sperm whales are large and killer whales are afraid of sperm whales, if the two really come to blows, sperm whales cannot beat killer whales.

Although both are toothed whales, the teeth of the sperm whale have degraded, leaving only some residual teeth, which are not enough to cause harm at all. However, its mandibles are relatively flexible and can bite large creatures, such as sharks or giant squid, which can easily be regarded as food for sperm whales.

Habits of Sperm Whales

Sperm whales like to live in groups, often consisting of a few male whales and large groups of female whales and calves, forming large groups of dozens or even two to three hundred individuals. It migrates north and south for reproduction and foraging. Its swimming speed is very fast, reaching more than ten nautical miles per hour. Sperm whales have excellent diving capabilities. They can dive as deep as 2,200 meters and can stay underwater for two hours.

Because sperm whales dive for a long time, there is little chance of seeing them on the sea surface, but their special shape and jets make them difficult to confuse with other large whales. Between two dives, the sperm whale will float or swim slowly on the sea surface, looking like a huge driftwood; its jets tilted about 45 degrees to the left are low and bush-like. There are often movements of jumping up and hitting the waves or whale tail hitting the waves.

Sperm whales sleep while floating on the water. They sleep very deeply and often float quietly on the water for several hours. Ships stop sailing at sea at night. While drifting, large whales are often found sleeping quietly next to the boat.