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An underwater photo of coral recovering from a bleaching event.
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Resilient Coral

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A red and white colored bristle worm swims in the water column.
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A Striped Deep Sea Worm

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Many medicines were based on a chemical from the sea sponge Tectitethya crypta.
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From Sea Sponge to HIV Medicine

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Polar bear siblings in the Churchill Wildlife Management Area near Hudson Bay spar playfully during migration.
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When it comes to many of our once-favorite seafoods, there aren't always plenty more fish in the sea. In fact, some studies estimate that up to 90 percent of large predatory fish have disappeared since humans began heavy fishing.
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Be a Picky Eater

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plastic bottles, cans, a yellow hard hat, and other human refuse litters a tropical beach
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Bring Your Own Container to Avoid Trash

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Hantkenina mexicana -- a foram with elongated shell chambers that lived between 45-49 million years ago, during the Eocene Epoch.
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Hantkenina mexicana

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In this photo of a shallow coral reef in the Pacific there are three species of forams. Their colors come from the symbiotic algae that live inside the foram shells.
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Shallow Coral Reef Foraminifers

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Sarah Gotheil, from IUCN Global Marine Programme, snapped this photo in the course of her research into fragile species and ecosystems.
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Protecting Fragile Species

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Shark Sizes: Whale Shark 46 feet, Basking Shark 33 feet, Great White Shark 23 feet, Megamouth Shark 15 feet, Nurse Shark 13 feet, Mako Shark 8 feet, Blacktip Reef Shark 6.5 feet, Bonnethead Shark 3.4 feet, Dwaf Lantern Shark 6 inches
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What is the Biggest Shark? A Chart Shows the Diversity of Shark Sizes

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Great White Sharks breach to hunt -- with split-second timing they grab their prey in one swift snatch. Follow the whole breaching action in this slideshow.
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Breaching Great White Shark on the Hunt

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The research submersible Alvin uses bright lights to illuminate the dark seafloor.
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Human Occupied Vehicle (HOV) Alvin

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