A four-armed, deep-diving, flipper-wearing Mech for the surviving Aquanauts. Here they're collecting rubies, which is the sustainable alternative to hydrolator crystals.
I used parts from 4404 Land Busters and the skeleton of the Phasma Hero figure.
In a water environment, the extra wingspan is crucial for stability and maneuverability.
A minifigure fits in the cockpit, albeit just barely.