About 5,000 species of crustaceans in the order Isopoda live in Earth’s oceans. According to the National Oceanic and Atmospheric Administration, they all have two pairs of antennae, compound eyes, ...

These Smithsonian Magazine Photo Contest images feature the captivating creatures that live beneath the waves A hawksbill sea turtle munches away on a sponge near Juno Beach. Smithsonian Photo Contest ...

Deep in the ocean lives a ghoulish fish with huge and menacing, fang-like teeth. The aptly named common fangtooth fish (Anoplogaster cornuta)—sometimes referred to by its nickname "ogrefish"—inhabits ...