Cruise through the grey-blue waters of the Stellwagen Bank Marine Sanctuary, scanning the horizon for the telltale signs of spouting, breaching, and tail-slapping whales. With live narration from a naturalist guide, there's plenty to see and learn about on this comfortable catamaran cruise.

Board the boat at Long Wharf and settle into a seat in the catamaran's cozy interior or outside, hanging onto the handrail during your breezy ride out to the best viewing spots. Let your captain steer you toward the waters of Stellwagen Bank Marine Sanctuary, where you can start looking out for whales, dolphins, and squawking sea birds. Listen to your naturalist guide explain a bit about the area's aquatic residents, including humpback, finback, and minke whales.

With your camera ready, look for massive humpback whales leaping out of the water during gravity-defying breaches, find out why they slap their tails in a maneuver known as lobtailing and learn about hide-and-seek performances known as spyhopping. With guaranteed whale sightings, you're sure to enjoy a fascinating look at Boston's biggest underwater residents.