Guild Wars 2

If you have exactly the same set up on land as in water, the spirits do not survive the transition from land into water, and are killed, putting the spirit counter to its full countdown as if they had been killed in combat and/or killed from a different skill set up on bar from entering water (tested on stone and sun spirits in mists).

That’s because on land they’re oakhearts. In the water they’re dolphins. Oakhearts can’t swim so they don’t transition. Its a dumb design choice on anet’s part.