As many as 15 species of whales populate the Stellwagen Bank National Marine Sanctuary. The mission of 7 Seas Whale Watch is to bring passengers within eyeshot of these enormous sea creatures as they thrash about, breaking the water's surface with their enormous heft and diving gracefully back below.

Seven of the species that populate the area are defined as great whales, which means they reach 30-feet at full growth. So while the tours spend 90 minutes in the whales' feeding area, customers might spot humpback whales, finback whales, minke whales, and even Atlantic white-sided dolphins. As the whales appear, grandiose and graceful, an on-staff naturalist describes the different species and their behaviors. Though whale sightings are never guaranteed—the whales are wild and act entirely on their own whims, much like tenured philosophy professors—7 Seas boasts a 99% success rate for spotting whales, and they offer free rain checks if whales don't appear.

Customers scan the seas from the sun decks or heated cabins of The Privateer IV. The boat was built to accommodate 300 passengers, though 7 Seas' trips top out at 149 passengers to ensure space, comfort, and a good view.

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