MervinLyonsas

Be a shark that swims hard

In the abdominal cavity of bony fish, there is almost always a swim bladder. The buoyancy generated by the swim bladder allows the fish to freely control its body in a certain water layer when it is at rest. In addition, the swim bladder creates enough space in the fish's abdominal cavity to protect its internal organs from damage caused by excessive water pressure. Therefore, it can be said that the swim bladder holds the life and death of the fish.