Get infinite health, stamina and oxygen. Enable infinite health to stop fish from damaging you, and enable can't be eaten whole to stop those same fish from swallowing you in one bite. Unlimited stamina will let you sprint for as long as you want. Unlimited oxygen is useful for those fish who can't breath under water, go exploring for as long as you want.
Gives you unlimited health to prevent other fish from killing you. This won't stop things from swallowing you if you're tiny.
Prevent your fish from being swallowed whole. Your fish can still be killed one attack at a time if infinite health isn't enabled.
Gives you unlimited sprint which allows you to sprint forever.
Prevents your oxygen from lowering allowing you to breath under water forever with fish / animals that have limited breath.