Sushi chefs have long relied on the treasures of the sea for their livelihoods, just like aquarium salesmen, and Herman Melville. Taste the flavors of their trades with today's Groupon: for $7, you get $15 worth of sushi and more at Mizu Sushi Bar in Newark.

Mizu Sushi Bar, conveniently located near the University of Delaware campus, blends a broad spectrum of fresh fish and vegetables on a menu brimming with maki and sashimi. Make it a maki night and aim teeth toward the spider roll, a mix of soft-shell crab, cucumber, and masago ($8.95), or tempt taste buds with the yellowtail roll, bedecked with the crunch of cucumber and just enough spice to end customers' long-standing feuds with water ($7.95). Vegetarian maki-lovers can calm cravings with the vegetable combo, a customized collection of vegetables such as asparagus, kampyo, avocado, cucumber, and oshinko ($5.95). Tuna, salmon, and shrimp sashimi ($2.00 each) regale chopsticks with tales of the sea and of specialty-roll sirens, such as the Beauty and the Beast, which layers kani, avocado, and cream cheese spread beneath tuna, eel, and a special sauce known for its flavorful charm and its ability to balance chairs on its nose ($12.95).