I do not believe sharks (and by extension, sea monsters) have contributed a single thing to our society. They’re annoying to kill as their glitchy behaviour makes them run around like an autistic kid after downing 3kg of sugar, they do a shit ton of damage, the shark hunting weapons are as effective as putting a plaster on a decapitated head as they’re too slow to ever hit a tiny shark, and too weak to kill a sea monster. you can’t even see underwater while holding them (but you can as a captain) so it’s impossible to even hit sea monsters 90% of the time). and for ALL that, what do you even get? You get ONE regeant for a middling potion 
poison tooth dagger is the ONLY good shark drop, and it’s borderline impossible to get because of how absurdly rare poison jaws is by itself, then you have to SOMEHOW kill it with a sharkhunting weapon to guarentee the drop. Meanwhile you’d need to kill 10 white eyes for a SINGLE power potion, and invisibility is useless outside of running past sirens (invisibilty 1 achives this) so the obulus is borderline useless too. They also give combat tag, which makes no sense? How tf is this shark lowering my bounty, it’s a SHARK? Does the grand navy has a shark translator? Do AO sharks have opposable thumbs and the ability to read? I don’t fucking think so.
In summary, i believe sharks have contributed nothing to this game, except for frustration. It’s truly been an arcane travesty experiencing sharks.
