J’hasi is happiest in the water, assuming it’s relatively shallow (no more than 100 meters or so, or so long as he can see the bottom, assuming it isn’t too open under him), and especially so if there’s tasty fish to be caught. Crabs are alright, clams are tasty and not too much work to eat, but the chase isn’t as much fun as it is with fish. He’s an excellent hunter underwater, and if not for the fact that he needs to breathe air, he’d be content to hunt for hours under the surface.
He tends to linger at the surface, floating until he finds something, diving down, creeping up on it, then striking fast with his spear or claws before he runs out of air and returning to the surface to eat if he caught something. Someday he’ll figure out waterbreathing spells, and then he’ll be able to try out the techniques of his tribe back in Black Marsh, as well as some new ones he’s thought up over the years.
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Jes isn’t quite as good of a hunter as their original TES counterpart, typically eating various edible cacti and other Mojave flora, and only opportunistically on the fauna, either as scavenging or getting the jump on them, throwing their wrench, traps, attacking them with their hands, whatever they can do, assuming the prey isn’t too dangerous. Usually it’s only very small things they can catch and eat, radroaches, mantids, and very young geckos being their typical fare far as protein goes.
Water is taken from any place they can find, whether prebottled or snuck from the taps where it’s pumped from underground. They will not drink from exposed water surfaces because of their extreme fear of radiation and fallout. They haven’t thought that maybe their food could have it too, so they haven’t starved just yet.