An environmental disaster has occurred in San Andres. All the water has turned into acid, and in this acid swim, "mutant sharks", ready to tear you apart. The only way to get around the acid is with Boats. If you fall into the water, then CJ'ya will start to burn acid and soon he will die. If you swim on the water with or without a boat, sharks will constantly attack you, demolishing your boat. But these sharks are not immortal and can be killed with a machine gun or other weapons. The main thing is not to fall into their mouths. Sharks on the radar are marked with a red marker, and in the upper left corner of the screen there is a counter showing how many sharks you have killed.