OK, animal lovers—no tuna jokes while these celebrity-activists are naked!

Though experts warn that the bluefin tuna may be beyond saving at this point, efforts are still being made in the fish’s defense.

Emilia Fox, Greta Scacchi, and Terry Gilliam have all gone naked in traditional PETA-style in support of this endangered creature.

Since 1970, the bluefin tuna’s population has suffered severe cuts—now up to 90% of the population is completely gone. And with 31 countries trying to manage their population—too many hooks in the pond, so to speak—efforts to revive their numbers aren’t going so hot.

Hunters love to catch the giant bluefin tuna because it’s a huge fish, growing over nine feet (the kind of fish you can hold your arms out, say “It was this big!” and not be lying about it), making it overfished in all of the world’s oceans.

Another reason the fish’s population has dwindled to a dangerous level is because it’s used in the priciest sushi (called hon maguro or toro—tuna belly), even though it’s condemned for eating for its high mercury levels.

Some big names are more into the consumption rather than the conservation of these fish. Mitsubishi, for one, owns a 40% share in bluefin tuna fishing, and Robert Dinero even has them on the menu of his restaurant, Nobu!

Um, shouldn’t this, like, be ILLEGAL?

At least some people in power care—and by power, I mean people with big names, fat wallets and the spotlight upon them. Folks like Fox, Scacchi and Gilliam, above, as well as Elle Macpherson and Stephen Fry, who both say they will boycott Nobu if the restaurant doesn’t stop serving the endangered species.

31 other celebrities are voicing opposition to the foul fare, including Sienna Miller, Sting, Ted Danson, Woody Harrelson, Alicia Silverstone, Trudie Styler and Charlize Theron. They’ve got your backs, bluefins.

(Do we ever hear about celeb-owned joints serving up giant panda brain or bald eagle beak for guests willing to pay for it? Not really. So why the bluefin, Dinero? )

The World Wildlife Federation says that the species’ breeding stock could be completely wiped out by 2012—which is not too far from now.  The time is more critical than ever to stop fishing for this species and leave them the hell alone! To make sure you don’t accidentally ingest this—yes, I’ll say it again—endangered species!—follow this guide.