
The hycean databank entry mentions a few behaviors that I think would be fun to actually see in-game.
Seeing a hycean actually pull its prey out of the water to suffocate and consume it would be very cool.
Hyceans do currently submerge themselves on occasion, which lines up with the bit about going underwater to avoid being struck by lightning during a thunderstorm. I know a weather system is planned (but not high priority) so it’s understandable why they don’t react to weather yet. It doesn’t exist! But I do hope the submerging happens at the same time as a thunderstorm whenever weather is implemented.
Also, hyceans seem to get stuck pretty easily when submerged, which leads me to believe that it’s not currently supposed to happen.

It would be hilarious to have a hycean actually pull you out of the water, get confused because you are perfectly fine and drop you back again.
this would be cool, we already see the squid thing in the ruins eat fish so seeing it eat things in the water around it would be very cool!!