Indoor play areas are safe spaces for children to merrily cavort without incurring the fiery wrath of the jealous, stationary sun. Avoid the resentment of astral bodies with today’s Groupon: for $45, you get a 10-visit pass to Under the Sea Indoor Playground in Manhattan Beach (up to a $90 value).

Under the Sea fosters children’s learning and growth in an underwater-themed yet water-free indoor play stronghold. Throughout the socks-only facility, kids of all ages bounce, climb, slide, and negotiate raises from their child bosses under the watchful eyes of the painted mermaids and sea life that fill floor-to-ceiling murals. The Moon Bouncer combines the mystique of the subaquatic realm with the gravity-snubbing freedom of outer space, letting kids jump and stretch for starry heights, and the Turbo Slide facilitates rapid reacquaintance with terrestrial surfaces. Filling much of the vast playspace, brightly hued climbing structures and a sea castle invite children to refine their clambering and crawling skills, useful for future careers as brachiating gibbon impersonators.

Under the Sea’s Baby Corner creates a soft spot for toddlers and pre-toddlers to enjoy themselves using educational play equipment. Parents or guardians should use their free admission to supervise their kids to guarantee their safety, entertainment, and absorption of life lessons, such as why it's important to check that the giant sea creatures are not alive before entering their bouncy bellies. Since the 10-visit pass may be used for multiple visitors, bring the whole family for a whimsical indoor nautical adventure.