Myri
Their vaguely humanoid-shaped bodies' surfaces are porous, peppered with large holes, to the extent that there's about 1/4 to 1/3 of their outsides that isn't technically 'surface' but empty space leading in. The cavities interconnect inside in a...
Tarsials
Tarsials live on a planet with deep, wide oceans, a fairly porous soil and dense forests of towering arboreal life, the circumstances of which make the redundancies built into their sleek, aerodynamic physiology uniquely adapted to. Tarsials have...