curious. swimming around me for a closer look before gliding away. this guide says they want to teach visitors to protect sharks. the shark is the perfect machine, the perfect predator, he says. it s inspiring, emotional and satisfying to interact with them. marine biologists say robust shark populations are necessary to maintain health coral reefs. in 2015 cuba placed restrictions on shark fishing. one of an increasing number of countries in the caribbean to realize sharks are not only important to the environment but a way to attract visitors. people in the caribbean used to commonly catch and kill sharks either for food because they were considered a nuisance, but warmer countries in this region are now taking steps to protect sharks. it s not just about conservation. shark tourism, visitors
the world where divers can safely swim with bull sharks. we re taking them at their word, praying they have had a big breakfast. bull sharks are considered some of the most aggressive in the world, but the ones we see seem mostly curious. swimming around me for a closer look before gliding away. they want to teach visitors to respect sharks and to protect them. [ speaking non-english ] reporter: the shark is the perfect machine, the perfect predator, he says. it s inspiring, emotional, and satisfying to interact with them. marine biologists say robust shark populations are necessary to maintain coral reeves. in 2015, cuba placed a restriction on shark fishing, one of the countries in the caribbean to realize that sharks are not only important to the environment, but a way to track visitors. people in the caribbean used to
shark sightings and attacks here in the northeast. sharks closer to shore. so, tonight here, what s driving this? our chief meteorologist ginger zee off massachusetts tonight. reporter: with more than two dozen reported shark encounters along our coasts this summer, new england is now gearing up for its peak great white season. this is where the shark hunt begins. greg skomaland the atlantic white shark conservancy are on a mission to tag and track these creatures off the coast of cape cod. why are we seeing more sharks this season? the sharks are feeding close to shore. shark populations are coming back and we got lots and lots of people going in the water so, that just creates almost the perfect storm in terms of the potential for shark attacks. reporter: the northwest atlantic has warmed three times faster than the rest of the world s oceans, than the rest of the planet. right. water temperature have anything to do with the increase of shark encounter? for certain specie
because of good environmental measures, the waters off new england and new york are healthier and a better environment and more creatures which means more sharks. we ve seen an increase in prey species that sharks feed on. harbor seals and gray seals. 100 years ago they were extricated and didn t live here. these populations are booming so are the shark populations. also the waters are warming up a little bit around where we live, which means species are migrating north. the biggest reason for more sharks here and great white sharks is because of an increase in prey. julie: that one right there was in long island. if i saw that on my beach i would say that makes me want to go to my dentist. julie: it makes me want to get in my swimming pool. jeff core win.
should i reconsider that considering more bites? you should absolutely go on that trip. you will have an amazing time. those sharks, you can swim with them safely, you have experts to help you and you will see a couple different species. those waters are shark superhighway. you get different species coming through. they are not mindless killing machines biting everything they can find. they are quite calm, they can be curious and beautiful predators. we want to have healthy shark populations. it s good we are seeing sharks here and need to make sure we are safe, follow some basic tips to enjoy the ocean while we still have sharks out there. griff: those tips are important. you spend a lot of time in the water with these creatures and telling me i shouldn t be concerned for my safety but we