They use water hoses and flash-bangs (or something similar). It’s funny to watch stink-bomb-flinging hippies suddenly soil themselves when they realize that the whalers are (gasp!) FIGHTING BACK. Because, as my wife said when I read her some of this stuff, “things that make a ship’s deck too slippery to stand on are *perfectly safe* in a heaving Antarctic sea, right?”
They are always talking about how they WILL be attacked, and how dangerous it COULD be. They are very paranoid about the use of an audio weapon.
"I know, we'll throw poo at them."