On The Water
Surfing:
While the Big Island isn't the top surfing destination in the islands, waves can be found in the northern part of Hilo Bay, and in Kealakekua and Wailua Bays on the Kona Coast. You can rent equipment locally.
Windsurfing:
The conditions are best on the Kona side, the most popular spots are Anaeho`omalu Bay in front of the Royal Waikoloa Resort and Kauna`oa Beach on the Kohala Coast.
Jet skiing:
For you speedy types, there are several places along the Kona coast which rent jet ski equipment and provide instruction.
Parasailing:
Pop on a parachute and sail over the ocean tethered to a speeding boat. Sounds fun? Check it out in Kailua-Kona.
Snorkeling:
For the more down-to-water types, there are lots 'o fish in the sea and you can see hem at any number of great snorkeling spots. Rent a mask, snorkel, and fins and do-it-yourself or take a snorkel boat tour.