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 ...

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 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 ...

Pygmy seahorses are fascinating animals. These tiny, colorful seahorses measure less than an inch (2.7 centimeters) and match their body colors and textures to those of the vibrant corals they call ...

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 ...

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 ...

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 ...

(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, ...