Guarphin (Guardian Dolphin)

This Mob will look exactly like a dolphin, just larger and darker and with fully white eyes. It will have golden and leather straps around its body, it will act like a regular dolphin, but will follow the player everywhere it goes while underwater. It will only attack Hostile  Sea mobs(Guardian, Drowned) and mobs that attack the player, like a wolf. And will not attack the creature unless it is provoked or the player is hit. The Guarphin will have as much health as an Enderman and as much attack damage as a tamed Wolf. Feeding The Guarphin will allow it to become Defensive, and will follow the player until it loses interest. This will be called "Guarphin's Interest." You can see how long the dolphin will be interested into you by clicking the button that shows you how long you have an effect for. How Long the Guarphin will be interested in you depends on the type of food you give it.  Sea grass= 8 minutes, Salmon= 15 minutes, Golden apple= 25 minutes.  This is the only way you can get Guarphin's Interest (Besides the command). Guarphins will spawn alone anywhere in a 100 block radius of an Ocean Monument. They are neutral to Players, Passive mobs, and Neutral mobs, and Hostile towards Hostile mobs. They will drop Cod and Gold. The spawn egg will be Blue with black spots.