Meet a Bargibanti pygmy seahorse.

Hippocampus bargibanti was the first described species of pygmy seahorse, a reference to its diminutive size. Also known as Bargibant’s pygmy seahorses, (for their discoverer, a scientist named Georges Bargibant), they reach nearly 30 millimeters when fully grown—just a bit longer than the diameter of a U.S. quarter, according to underwater photographer Richard Smith, who researched this species and a close relative, Hippocampus denise, for his doctoral thesis.