Manta rays are fish - close relatives of both other rays and sharks. But swim close enough to one on a manta ray night dive and you'll swear you were seeing something else. Off the Kona Coast of the Big Island, manta rays can grow to 15 feet from wing tip to wing tip, and weigh more than 3000 pounds. Not to mention they can live for 40 or 50 years or more! Imagine getting up close and personal with a 35-year-old manta on an Anelakai manta ray night snorkel adventure. Dive into the water and experience it for yourself!