Picture this: You're floating in the calm waters off the Waianae coast, where your 42-foot sailing catamaran has just dropped you off; below you in the reef are turtles; in the distance you see spinner dolphins, taking the high, spinning leaps for which they are known. Happens every day on the 4-hour tours operated by the Cullins family, who have been swimming in these waters for decades. In the winter, you may spot humpback whales on the morning cruise, which includes continental breakfast, refreshments, snorkel gear, instruction, and flotation device. They also have an afternoon/sunset whale-watching sail in the winter for $75 per person, and a sunset/full moon/star-gazing sail for $95.