In the underwater world, evolution often follows familiar rules: males compete, and females choose. But, the captivating pipefish dares to break these established rules. They are called pipefish ...

Smaller males require less energy to move and perform their reproductive rituals, an advantage in their environment. Pipefish do not exhibit visible sexual dimorphism: males and females look alike.

Dwindling natural habitats are causing a significant decline in certain seahorse species. To bolster populations, researchers ...