My head canon for sea-based Kaiju is they have a sack of muscles somewhere inside their body that can expand a cavity, kind of like the diaphragm expands the lungs, except instead of taking in air it just creates a volume of vacuum inside of them. This makes them extremely bouyant relative to the surrounding sea pressure, so they rapidly ascend and can casually float like a boat near the surface.
But if they ever want to dive again, they just let that cavity collapse and all their bouyancy goes away.
jettrscga@lemmy.world 5 months ago
He looks badass from the top, but under the water his lil legs are paddling at full speed.
RootBeerGuy@discuss.tchncs.de 5 months ago
That’s a paddlin’!