(CNN) — Pygmy seahorses, about the size of a fingernail, are some of the smallest vertebrates in the world. First discovered in 1969, little was known about the creatures. But in the early 2000s, ...

Pygmy seahorses (Hippocampus bargibanti) are masters of camouflage. They are among the smallest vertebrates, just the size of a thumbnail, and live in coral reefs in the western Pacific. There they ...

The pygmy seahorse is a master of disguise so skilled that it’s almost impossible to tell apart from the coral it lives on.

The pygmy seahorse is cute, that much is clear. It’s got amazing camo. Also clear. But the big mystery: How on Earth it changes to so perfectly match its surroundings. Ahhhh, there! That's the ...

Meet the Japan pig, a newfound species of pygmy seahorse discovered in Japan. Only the size of a grain of rice, these colorful creatures inhabit shallow waters and blend in well with the algae-covered ...

With adults only about an inch tall, the dwarf seahorse is the smallest of the four seahorse species found in U.S. waters. This dainty, curly-tailed fish occurs only in shallow seagrass areas in the ...

For the past three weeks, Richard Ross has been spending his mornings next to a small tank in a back room at the Steinhart Aquarium in San Francisco. He leans in close. Not only is the room dark, but ...

In rough, boulder-strewn waters off eastern South Africa, researchers have found a new species: a pygmy seahorse about the size of a grain of rice. The finding shocked them because all seven species ...

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...