My name is Gabrielle Reisner and I'm a urban ecology teacher here in the district, at Woodrow Wilson High School. And I just spent the past year in Honduras and spent out a lot of time out on the Bay Islands, on the Belizean Reef. And it was the most amazing thing I had ever seen. Like, I'm not a diver but I've been snorkeling in the Florida Keys. And it's just nothing compared to what you see there.

And I, like, swimming there, like, I got teary-eyed at the beauty of it all. And I thought, I want to show this to everybody I know. And maybe we can't and maybe we don't want to get everybody we know there, but how do we show people? Because, as you said, ignorance - people just don't know what's out there. And seeing that, like, I know that I have to do everything I can to protect it and to keep that beauty there. And so how do we show people what's there? And that's another of the points, that these areas off the coast of Belize, for example, are much more productive in terms of an economy for tourism than necessarily being exploited for their creatures. Dr. EARLE: Yeah. Yeah. Dr. EARLE: One of the reasons Enric and I are associated with National Geographic is that it's a way to reach people effectively through magazine, books, television, online and any other form of communication we can muster.

Another reason for hope, though, because going back to the middle of the 20th century, for better or for worse, we didn't have iPhones and we didn't have, you know, laptops and iPads and all the other things that now are in everybody's hands all over the world. We can communicate in ways that didn't exist before. So you can snap pictures when you go to Belize and share it with your buddies, put it up there on Facebook and say, look, look at this. This is fantastic. We need to take care of this. Or if you see something horrible like piles of trash on the beach, you can take a picture of it and send it around and say, this is terrible. Let's stop this. Sylvia Earle, a explorer-in-residence here at National Geographic. Also with us, Enric Sala, a marine ecologist and a National Geographic fellow.  Pat with us from Manchester in Michigan. Hey, Neal. Thanks for taking my call.  I was lucky enough to grow up in the great state of Maine. And in the great state of Maine, the lobstermen out there - I was a lobsterman the summer before I left home - use a measure to measure if a lobster's too big or too small to keep. If it's not, you throw it back.

Our neighbors to the north in Canada can sell baby lobster tails the size of shrimp I've seen before. And if you go to Boston to have dinner, you can get a lobster as big as your plate if you pay for it. And you're suggesting that different regulations in different countries are making this kind of a - what needs to be perhaps a more regional or global effort difficult? PAT: Yes. And why can - even the lobstermen in the United States, in Massachusetts, they can take a giant breeder lobster and market that because of the commodity of it. In Maine, it's put back because that is the breeder. It's interesting, we're talking about the Chesapeake Bay earlier, and they do the same sort of thing with vintage bulb, as they call them there, striped bass as they're called everywhere else in the world, that if it's too big, you have to put it back, so - also too small. And obviously, that's not necessarily an approach for salmon, which are caught in different ways, but these kinds of approaches, is this the kind of thing that needs to be done?