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An unidentified moray eel held in researcher's hands.
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A Baby Moray Eel, or a Really Small Adult?

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An Arctic cod rests in an ice-covered space.
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Arctic Cod Beneath the Ice

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

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This day octopus (Octopus cyanea) has shaped itself like seagrass or some coral so hide from predators or stalk prey.
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Camouflaged Octopus Blends In

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This common octopus (Octopus vulgaris) shows off its siphon, which it uses to propel itself through the water.
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Octopus Shows Off Its Funnel

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Branching coral in naturally acidic water.
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Fragile Branching Corals in Acidic Water

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But closer to the CO2 seeps, the complex reef has been replaced by a “monoculture” of boulder corals.
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Monoculture of Boulder Corals

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A healthy and vibrant coral reef in Papua New Guinea.
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A Healthy Coral Reef

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Acidic waters are also able to completely dissolve coral skeletons.
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Dissolving Coral Skeleton in Acidic Waters

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A common dolphin with calf jump through the ocean.
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Common Dolphin and Calf

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A pod of Baird's beaked whales in the eastern North Pacific.
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Baird's Beaked Whales

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The acidic waters from the CO2 seeps can dissolve shells and also make it harder for shells to grow in the first place.
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Dissolving Shell

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