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 ...

Pygmy seahorses are remarkable creatures. These tiny marine vertebrates, often no bigger than two centimeters in size, are masters of camouflage, able to match the texture and color of the coral in ...

Denise's pygmy seahorse isn't a wanderer. Individuals typically spend their entire adult lives on a single coral colony. Over many generations, this lifestyle has allowed natural selection to ...

Whether it’s seaweed cloaks or see-through wings, these animals know how to hide. Meet four masters of disguise who’ve turned camouflage and mimicry into a work of art.

(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, ...