Sailors learn to be experts at knot tying, from securing the vessel with a tight anchor hitch to securing the captain after he succumbs to madness and tries to eat his own hook hand. This Groupon is a mutinous bounty.

$49 for a Whale-Watching Boat Tour ($99 Value)

Whale watchers climb aboard a 56-foot boat and embark on an approximately 3.5-hour journey into the habitats of killer whales. As USCG-licensed captain Daniel Wilk pilots the vessel, a trained naturalist shares info on the whales and the area's wildlife, which may include harbor seals and bald eagles cawing off-key renditions of the national anthem.

Orcas Island Eclipse Charters

When the producers of Free Willy 2: The Adventure Home were casting for the roles of coastal marine patrollers, they didn't look to the scores of hopeful actors in Hollywood, opting instead to find boating professionals with real experience. Their search led them to Orcas Island Eclipse Charters founders Dan and Denise Wilk, whose extensive knowledge of aquatic wildlife made them a serendipitous choice for sharing the camera with Hollywood's most famous orca.

Aboard their 56-foot vessel, Dan and Denise continue to share the passion that led them to the big screen in the first place. Their enthusiasm shines through to passengers while they guide tours into the habitats of killer whales and harbor seals. Occasionally, expert guides direct passengers to look up from the water to spot deer on nearby land or bald eagles soaring through the sky above. When asked how they happen upon so many natural specimens on their trips, Dan and Denise would tell you they don't leave their tours up to chance, coordinating excursions with a whale-watching service that pinpoints where the underwater mammals are feeding.