I’ve been to the fur seal rookery on the Pribilof Islands in Alaska's Bering Sea - it’s an amazing sight. It’s also heartbreaking to hear that dead baby fur seals can be found on the beaches there, most likely due to starvation.

The fur seals' food, pollock, are being vacuumed away by massive industrial fishing ships, and wildlife is starving as a result. It's not just the seals, Endangered Steller sea lions are also being forced to spend more and more energy foraging to take in fewer calories, and their birth rates and youth survival rates have declined.

For years, Greenpeace has warned that industrial fishing would destroy this fragile environment, but the fisheries managers have continued to buckle under pressure from industry. As a Greenpeace ocean campaigner, I've personally been ridiculed and insulted for these warnings.

I wish more than anything that I’d been wrong. But despite government assurances that a recovery was about to happen, the pollock population has continued to plummet - to the lowest level on record. America’s biggest fishery is in real trouble, putting the survival of marine creatures that depend on pollock in real jeopardy.

Will you help me prevent a disaster in the Bering Sea? Please make a generous donation today.

We may be witnessing the collapse of a major ecosystem - but with your help we could still stop this. I've dived at 2,000 feet deep in the Bering Sea, as one of the first people to ever pilot a submarine into some of the world's largest underwater canyons. I've seen the wonders there - humpback and blue whales, orcas, fur seals, sea otters, walrus and dolphins and endangered Steller sea lions… these are the animals who call the Bering Sea home and who depend on the pollock. For now.

The impact a fishery collapse will have on local fishermen and their communities in Alaska is also significant and we’ve been pressuring the government and the fisheries managers responsible for the amount of pollock that can be caught. Just last month two of the scientific advisors to the pollock fishery joined Greenpeace in calling for steep cuts to next year's catch - but their warnings were unheeded. As I write, fishery managers are about to approve a catch of 813,000 tons, going ahead with business as usual while they push the ecosystem ever closer to the edge.

Please, support our efforts to protect the Bering Sea and all those who depend on it for survival. We can't do it without YOU.