Eat small fish has always been a big fish, but there are still small fish that eat big fish in nature, and they only eat big fish such as fierce sharks. The largest shark is more than 20 meters long and can swallow 90 to hundreds of small fish with one mouth. But it also has a nemesis, which is a small hard-jawed poisonous fish. This kind of fish has a short and thick body, a flat back, a round abdomen, flabby skin, and spikes all over the body except the mouth edge and tail. After it absorbs enough air, its body can swell into a ball, and the upside-down thorn immediately stands up and becomes a sharp spike. When the shark swallowed the fish, the poisonous fish with hard jaws mixed into the big belly of the shark, and then it moved easily, bulging all over, and the whole body was stabbed around the shark's stomach. The shark could do nothing. After a while, the shark's stomach was pierced, and then the meat on the ribs was chewed up by the hard-jawed fish. When the hard-jawed fish came out, the shark died

There is a spiny fish in the Kenai River in Greece. It hovers like a spinner in the water. It has a sharp mouth. When a small fish meets it, it will be spun into powder and immediately become its delicious meal. When the big fish meets it, it has a bigger goal and will be bitten by its hard and sharp mouth and die tragically. If the big fish swallowed it, it would be a catastrophe. Spinosaurus circled in the fish's stomach, ate many big fish's internal organs and killed them. But Echinococcus is not invincible. It is most afraid of mussels. If its hard beak is caught by mussels, it will become a delicious meal for mussels even if it struggles.

Nature is wonderful!

Let's find the mystery together!