If baby Dirk lived all alone, how did he learn to talk and stuff?
and get stuff other than fish and sea plants,cause pretty sure under his house was like an oil rig(https://www.nytimes.com/2016/03/08/science/marine-life-thrives-in-unlikely-place-offshore-oil-rigs.html)
paradox babies are very smart on their own, (dirk literally wanted to go back right after he was born) and he would learn from watching movies and anime from the internet, of course. [see under the cut]
and as for other food sources, we wouldn't really have any other way to get anywhere but the ocean. but he would have some seeds(and various planting materials for them) left for him in his kitchen from rose at least (for making tea c:). not to mention the orange sodas with it. (because rose told dave to get those for him)(and rose would have plenty of things left for both dirk and roxy. :) )
and i think that the apartment beams full of marine life would be beautiful. very bountiful. absolutely good for the baby.