"I can cast water breathing spells, as can Planus and Charlarn. So we could investigate if we wanted. I don't know what we'd find. Let me try detecting for magic."
Iggy will cast detect magic. He'll scan the water and anything else around.
"Ultimately, we're still looking for an apple tree in a garden, shrouded by silver mist. I don't think that garden will be on this plane. Someone, or something, on this plane, though, should help us on our way towards it."