The sea has much to teach us: its tides foretell the lunar cycle, its salt treats us to delicious shark jerky, and its colorful creatures prove that nature looks better in Blu-ray. Celebrate the big salty puddle's sagacity with today's Groupon: for $12, you get $25 worth of tropical cuisine at Yabba Island Grill.

Yabba Island Grill's casual approach to exotic dining channels the menu's fresh, local seafood into waiting mouth caverns while providing an atmosphere worthy of being named OpenTable's Diners' Choice "hot spot” and “vibrant bar scene”. Culinary directors arrange the classic combo's oysters, clams, and shrimp ($12.90) into a stomach-filling dish or a fresh, chartworthy crustacean boy band. Clamp tooth-vises around the copiously spiced Yabba Island jerk chicken entree ($19.90) or fiery Black Jack Angus burger ($11.90) tempered by a dollop of soothing guacamole. Recently snared tilapia shimmies into patron-selected culinary garb, such as passion fruit or guava-jalapeño sauce, after accessorizing in the glow of an open flame with cloaks of citrus butter and stick-on sea-salt beauty marks ($16.50).

Signature bar libations, such as the citrusy Yabba Rita or fruity Lava Slide ($10.50 each), deluge throat canals on the outdoor patio as indoor imbibers chow down under a colossal fish mural's watchful eye. Eaters hula to tropical beats and challenge the moon to impromptu limbo contests at lively Island parties beginning at 10:30 p.m. on Friday and Saturday.