Okay if you are looking for a way to get your ichy un glitched from above the water, don't worry. I had two of them stuck above to water because a accidentally boosted while going up. What I did is I put follow owner and just went about my business. She got unstuck and came to shore. BTW I got them stuck by shore so idk about in the ocean or something but I don't think they would get stuck there.
Spawn a blue lv 10000000 dolphin, name it water sonic, get a boom box and play the sonic them song, get master craft saddle for it, lv up speed and damage only, make a living torpido, and rule the seas.
The first time I saw one of these, I was on a rock in the middle of the sea taming a Pteradon. It came close, scared me, and since I thought it was aggressive, I gritted my teeth and bravely killed it. Shut up, noob's mistake.