Noun
pantropy (uncountable)
(science fiction) The process of adapting humans through genetic and/or cybernetic means to thrive in environments otherwise inhospitable to them, such as outer space, the deep sea or other planets.
A very long time after the beginning of the Pantropy program, a starship crewed by "standard" humans is en route to some unimportant backwater planet to deliver a pantropy team who are "adapted" humans resembling seals more than humans. Source: Internet
However, the government really only tries to derail pantropy because it will cut their profits from terraforming attempts. Source: Internet
The stories are also notable for including a form of pantropy that has been used to modify humans into a sea-dwelling form known as "Tritons". Source: Internet