A recent survey ranks whales' bellies ahead of safety-deposit boxes and mattresses as the preferred place to store valuables. Experience one of nature's most priceless resources with today's Groupon to Cape May Whale Watch & Research Center, operated by The Starlight Fleet in Cape May, New Jersey. Choose from the following options:

• For $15, you get one admission to a two-hour Dolphin Watch Cruise (up to a $30 value). The cruise departs at 10 a.m., seven days a week.

• For $20, you get one admission to a three-hour Whales, Birds, and Dolphins tour (up to a $40 value). The cruise departs at 1 p.m., seven days a week.

• For $29, you get two admissions to a two-hour Dolphin Watch Cruise (up to a $60 value). The cruise departs at 10 a.m., seven days a week.

• For $39, you get two admissions to a three-hour Whales, Birds, and Dolphins tour (up to an $80 value). The cruise departs at 1 p.m., seven days a week.

One child age 6 or younger gets in free with each paid adult, and admission for each additional child younger than 6 is $12. Admission for each child age 7–12 is $20 for the Dolphin Watch Cruise and $25 for the Whales, Birds, and Dolphins Cruise.

The Cape May Whale Watch & Research Center’s 80-foot boat keeps patrons comfortably afloat as they scour the deep seas for humpbacks, waterfowl, and other marine animals on a variety of cruises. Tours set sail seven days a week on the M/V Whale Watcher, whose design elements allow for unobtrusive, up-close viewing of whales, dolphins, and runaway goldfish. On the two-hour Dolphin Watch Cruise, guests dine on complimentary donuts, apple juice, and coffee, while seafarers the three-hour Whales, Birds, and Dolphins tour can fill up on galley snacks such as pizza, ice cream, and hot dogs ($2–$5; not included in the value of this Groupon). Both tours completely encircle the island of Cape May, passing natural scenery and a variety of historic sites, such as the rugged cliff where George Washington slayed his first sea serpent.