This comment of mine is somewhat ironic - I had the Zoimorphisits School of Magic which is not much less of a mouthful, but shares similar bio-modding, with magic of course.
Genomorphing? - This is already in use in a few places.
Clade is a word I literally learned yesterday when looking at wikipedia about how closely related puffins are to penguins (they are both birds, that's it..). It a nice technical word, but hardly common.
Biogenesis? - Creation of new types of life from other living things.
I would guess there is a safer sea-route that while longer is 'cheaper' in less lost expeditions.
This place could come under new focus if the sea route became untenable due to a failed alliance, new powerful enemies and the like. The PCs could be contracted to clear a fixed length of road, or paid by the mile.
The Petty Kingdoms is a region consisting of hundreds of small states. Some are kingdoms, some are city states, some are large farming communities, some are duchesses and baronies and so on and so forth. Within a few miles the PCs might reach a new "country" with completely different rules and norms than the one they left behind. "What do you eat here? Humans ye say? Lets turn around fellas."