Ive come to the realization that there are no mobs that can swim, so that's where the inspo came from for this idea...
Im gonna add more soon, but this is a start to this biome/update suggestion.
#Deep Sea Update Idea
autumn kestrel
zealous crater
yes
stone orbit
Make sharks netrual and dolphins aggressive unless fed
frail oyster
Dolphins are more aggressive than sharks what
uneven solar
Would be cool 
spare hare
I hate dolphins
I can't say why because I'll probably get banned but dolphins are horrible
hallow brook
Eh
haughty whale
the shark shoud be neutral and the dolphin should be aggressive
it would be more realistic
uneven solar
the shark shoud be neutral and the dolphin should be aggressive
Both should be neutral
Dolphins aren't aggressive.
haughty whale
are you sure
north fjord
the shark shoud be neutral and the dolphin should be aggressive
While yes, this is how it should work, the lie of angry sharks and silly dolphins has been force fed to us too much already. So, a lot of the playerbase would get confused.
haughty whale
lethal notch
This but not the sharks being violent
Like if someone hurts you, then they could chase you
Also if poisoned or smth
Should add mercury poisoning if you eat too much fish too
wise cosmos
Ive come to the realization that there are no mobs that can swim, so that's wher...
Sea urchin should be like cactus
Except applies poison
wise cosmos
Yeah, but you don’t jump if you touch it
It should, but way less knock back
Like a little push back
lethal notch
Like the bigger the fish, the harder it pulls
wise cosmos
They do that because it’s like a reflex to pull yourself away from what poked you
lethal notch
It should, but way less knock back
mehhh cuz then people are gonna use it for parkour and it’s gonna be slopified
wise cosmos
mehhh cuz then people are gonna use it for parkour and it’s gonna be slopified
it’s not actually gonna be bouncy, just like push you slightly off of it
So that you don’t spam hit it by mistake
It doesn’t make sense you’d be able to stand on it
lethal notch
I mean if they made it just venomous, then it would be fine
cuz then people would just pull their hand back
haughty whale
i still think the dolphin should be hostile
lethal notch
i still think the dolphin should be hostile
Only when you hit them
rugged glacier
eternal dove
Ive come to the realization that there are no mobs that can swim, so that's wher...
all mobs can swim
Except horror mobs
haughty whale
Only when you hit them
no at all times would make more sense
autumn kestrel
all mobs can swim
I may be wrong, but im pretty sure most mobs float in water, but mobs like the horror ones and armored crabs sink
None of them actually swim tho
eternal dove
None of them actually swim tho
they do swim
tall cypress
I mean we have crabs but that’s just it
autumn kestrel
They do?
tall cypress
We need more