WHALE-MAN!

Apparently there are a bunch of dude's who wander the oceans of the world hunting for fishermen committing heinous crimes against the animal populous. These renegade sea-vigilantes record their prey committing these crimes for evidence in the event that those parties choose to fight them in court (which they never do). The Sea Shepard II is a boat with a devastatingly powerful reinforced hull designed to disable its enemies. Basically they ram the bad guys and make them cower away with their tails between their legs.

So... this begs the question... is this ethical? The answer... BATMAN.

Now... technically vigilantism is illegal, but if you have the tool required to succeed in your affair without collateral damage then you have my blessing. Ethics is something that exists outside of the law. If your moral compass dictates that what these people are doing is wrong then you have the liberty to do something about it (but remember, the enemies have rights too). Fortunately the law dictates that the bad guys are doing something illegal so these super-marine animal-heroes have the law on their side (more so than the fishermen anyway).

When it comes down to it this is a question of perspective. The fishermen may not think what they are doing is wrong but they more than likely know it is illegal. This is enough to justify the vigilantes' actions in my mind, as long as they do not injure or kill any of the baddies.

Oh yeah and one last point: personal responsibility. They need to be aware that what they are doing is incredibly dangerous to themselves and their crew. They take this upon themselves when they attempt to utilize their own brand of justice.

Anyway, so yeah. I am a comic book geek so it would be silly for me to not agree with their actions.