This is something that could be straight out of "The Jetsons" -- strap on a jet pack and go flyboarding over the waters of the Peconic River.

The contraption is a water-powered skateboard of sorts that shoots out powerful streams of water, letting the wearer not only "fly," but also hover in the air, dive into and shoot out of the water like a dolphin. It's an extreme water sport that's open to beginners at Treasure Cove Resort Marina in Riverhead. Lifejackets are provided; $199 for 30 minutes.

advertisement | advertise on newsday

Newsday's staffers have come up with 25 of the coolest things to do in Nassau and Suffolk. Now it's your turn to vote for your favorites -- you can vote up to three times a day. 

And if we missed your coolest thing to do on Long Island during summer, take a photo and share it with us via Instagram with #LISummer.

App users, click on the link above to check out the 25 cool things to do this summer and start voting for your favorites.