Peter Teske and Luciano Beheregaray of Macquarie University in Sydney, Australia, have just solved one of nature's most enduring mysteries: how seahorses evolved to swim standing up ...
Seagrasses, which thrive in shallow water, spread rapidly through these newly formed environments. The researchers think that the ancestors of modern seahorses followed.
Horizontally swimming fish living in seagrass beds don't blend into the environment well and are easily picked off by predators.
A solution seems to have evolved in seahorse ancestors: the upright body shape, which enables seahorses to seamlessly blend in with surrounding seagrass.
(Photo: Robert Sisson / NGS)