Evolutionary biologists sequenced seahorse DNA to understand their evolution, one like no other sea creature.
Professo Axel Meyer identified, from genomic sequencing, that several genes that are present in fish teeth as well as human teeth development, are not found in seahorses. They evolved by the way they eat food, they suck up prey rather than bite and chew.
Curiously, they found that gene duplication influenced pregnancy in males. Duplicated genes can create an entirely new function, and this just so happens to be the pregnancy in males. The genes probably only regulates the process by which the babies leave the brood, but there still is much to learn.
The seahorse is an excellent organism to study because is shows how evolution can rapidly change and organism's appearance and function.