So I was thinking of a new Event which would allow players to have a chance at fishing an extremely difficult and rare Shark. The event would work like this: “A Shark has been spotted near the docks!” would appear in the chat, and players could try to fish up a difficult yet rewarding catch to add to their collection. Perhaps even mutiple kinds of sharks could be available.
I got this idea from Animal Crossing: New Leaf, where players could go to an island resort and catch rare sharks for profit. In TU the Sharks would be more of a bragging right than an optimal way to make cash, but I still think this would be cool to have in the game.
I believe that the devs have said that any sea creatures such as dolphins, whales, etc will only ever be purchasable with sea dollars because fishing them up would be morbid/cruel.
I had a similar suggestion a few years ago:
Honestly I’d love some more kinds of sharks in the game so I would be all for this. Even some small ones like Blacktips would be a welcome addition. I’d like to see improved AI for the larger fish first though, right now sharks do not look too great on display in the tanks.