This is not a SFW instance. NSFW communities will be tagged, and efforts will be made to keep SFW communities clean, but proceed at your own comfort level.
Plants grow under/in water, why would it be impossible to plant them on purpose? Genuinely asking. And fish farms are a thing.
Also, pet peeve of mine: carps ARE sentient as they can perceive their surroundings using their senses. You probably want “sapient”, being able to reason and think about those surroundings in more than just immediate reflexes.
Agriculture also seems unlikely unless youre a sentient carp or something
Plants grow under/in water, why would it be impossible to plant them on purpose? Genuinely asking. And fish farms are a thing.
Also, pet peeve of mine: carps ARE sentient as they can perceive their surroundings using their senses. You probably want “sapient”, being able to reason and think about those surroundings in more than just immediate reflexes.
Even more so, seaweed farms are a thing; 100% EXACTLY the thing the asked for.