Hannah Waters

One of Hannah Waters's earliest memories is digging up sand crabs on a Delaware beach, and she hasn't stopped digging the ocean. Formerly a writer, editor and producer for the Ocean Portal at the Smithsonian National Museum of Natural History, she is currently an associate web editor at Audubon.org. She studied Biology and Latin Minnesota’s Carleton College, sneaking off to the coasts in the summertime to study seabird colonies, conserve endangered piping plovers, and help lobstermen with their traps. She loves cephalopods, imagining plankton as larger-than-life monsters, and weird adaptations.

Climate Change

Today, carbon dioxide (CO2) levels in our atmosphere are the highest they've been in 15 million years. It's the cumulative impact of an ever-expanding population―7 billion people and rising―and an ever-increasing thirst for...

The Deep Sea

Deep below the ocean’s surface is a mysterious world that takes up 95% of Earth’s living space. It could hide 20 Washington Monuments stacked on top of each other . But the deep sea remains largely unexplored. Dive down 650...

Octopus and Octopod Facts

Octopuses, also called octopods, are soft-bodied marine invertebrates characterized by their 8 arms; their scientific name Octopoda comes from the Greek for "eight arms." As cephalopods , octopuses are closely related to...

Harp Seal Pup at Sunset

A harp seal ( Phoca groenlandica ) pup rests on the ice at sunset in the Gulf of St. Lawrence, Canada while its mother hunts. Adult harp seals have dappled gray fur, but the babies are born white and are known as "whitecoats...

Gentoo Penguin Mother and Chick

A gentoo penguin ( Pygoscelis papua ) mother stands with her chick in Antarctica. When walking on land, gentoo penguins waddle with their long tails dragging behind them; but in the water, they are the fastest penguins of...

Octopus Eating a Crab

A veined octopus ( Amphioctopus marginatus ) briefly leaves its hiding spot, a seafloor shell, to devour a crab.

Baleen Whale Facts

Mysticetes or baleen whales are enormous marine mammals characterized by having baleen plates in their mouth instead of teeth. They are cetaceans closely related to the odontocetes or toothed whales. Cetaceans share a common...

Octopus Shows Off Its Siphon

This common octopus ( Octopus vulgaris ) doesn't have a jetpack to help him zoom through the water, but he's got something pretty close: a siphon that shoots water. (It's the little orange/yellow cup in the picture.)...

Camouflaged Octopus Blends In

Octopuses can change the texture and color of their skin to blend in with their surroundings. This day octopus ( Octopus cyanea ) has shaped itself like seagrass or some coral so hide from predators or stalk prey.

Octopus Shoots Ink

An octopus shoots ink in defense as it swims away from a scuba diver.

A Baby Moray Eel, or a Really Small Adult?

This is an unidentified moray eel , collected from 650 feet off the coast of Curacao. Morays are very secretive animals that tend to stay hidden in caves and crevices. Researchers with the Deep Reef Observation Project (DROP...

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