Both sharks and whales are relatively large animals in the ocean, but there are still many differences between them, which are mainly reflected in the following points:
1. Attributes: Sharks belong to a kind of fish, specifically, they belong to cartilaginous fish. The whale is different, although its name also has "fish", but they are not fish, but mammals. Because of their different properties, they also differ in the way they breathe. As a mammal, whales use lungs to breathe; As a fish, sharks use gills to breathe.
2. Reproductive methods: Sharks and whales use different reproductive methods. Most species of shark reproduce by laying eggs, or ovoviviparous; Whales, on the other hand, reproduce viviparously.
3. Way of advance: Sharks and whales need to swim in a certain way in the ocean, and the specific ways they use are different. Sharks move their tail fins from side to side as they move forward, while whales move their tail fins up and down to move forward.
4. Whether there are pectoral and pelvic fins: The fins of sharks and whales are also different. Generally speaking, whales do not have pectoral and pelvic fins, while sharks have these two kinds of fins.
Sharks and whales are relatively large marine organisms, they are in the food chain are relatively upper species. Generally speaking, sharks are more powerful than sharks, because sharks are more ferocious in character, while whales are generally more docile. However, there are also natural enemies of sharks among whales, such as killer whales. When sharks encounter killer whales, they usually hide.
