“I love my Force Fins, which are the kind of fins Special Forces use and really are adapted from the fins of fish. They’re very efficient.”

And there’s no question that it is a factor, but it’s preceded by the loss of resilience and degradation.

Nearly all of the major kinds of life, divisions of life, phyla of animals, occur in the sea. Only about half of them can make it to land or freshwater.

That, in turn, influences the temperature of the planet. The Arctic is now vulnerable because of the excess carbon dioxide in the atmosphere, with a rate of melting that is stunning.

There is a terribly terrestrial mindset about what we need to do to take care of the planet.

They have a lateral line down their whole body that senses motion, but maybe it does more than that.

For heaven’s sake, when you see the enemy attacking, you pick up the pitchfork, and you enlist everybody you see.

The Arctic is an ocean. The southern pole is a continent surrounded by ocean. The North Pole is an ocean, or northern waters. It’s an ocean surrounded by land, basically.

Everyone has power. But it doesn’t help if you don’t use it.

Like a shipwreck or a jetty, almost anything that forms a structure in the ocean, whether it is natural or artificial over time, collects life.

In terms of personal choices, let’s all think more carefully about where we get our protein from.

The Arctic is a place that historically, during all preceding human history, has largely been an icy realm with an impact on ocean currents.

I have come up at the end of a dive, and the boat was not where I left it. I had to take care of a buddy who did panic. But I was confident the boat would come back.

Humans are the only creatures with the ability to dive deep in the sea, fly high in the sky, send instant messages around the globe, reflect on the past, assess the present and imagine the future.

If somebody dumps something noxious in my back yard, the dumper is the last one I would call on to repair the damage.

We have become frighteningly effective at altering nature.

Nothing has prepared sharks, squid, krill and other sea creatures for industrial-scale extraction that destroys entire ecosystems while targeting a few species.