Lessepsian migration is what happens when species from one place can move into a new place because the environment has changed enough to allow them to thrive there. The most common example is the eastern Mediterranean Sea after the Suez Canal was built. The change in salinity allowed Red Sea species to now live in the Mediterranean. See, that fish from the other side of the world is getting sucked into the whirlpool. This is to show what the whirlpools do.