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 $50, you get $100 worth of seafood and merchandise from Giovanni’s Fresh Fish Market & Galley.

Offering convenient shipping, Giovanni’s provides customers with easy access to the freshest and tastiest seafood around. Shop online and peruse a mountainous variety of fresh fish, such as sushi-grade ahi tuna ($24.95/lb.) and king salmon fillet ($19.99/lb.), or gnaw the briny lock off shelled treasures including kumamoto oysters ($22/dozen) and soft-shell blue crab ($29.99/dozen). Sauces and spices accent dishes with flavor-enhancing flourish, and Giovanni’s pairs oceanic comestibles with wine and gifts.