If Diggory's sorted it out then I would reckon that figuring out a way to translate the Mermish is key. And as for screaming- I doubt very much that it sounds like that to Mer-folk. And who knows what we sound like to them, eh? Babbling idiots, could be.

I'll figure out a way to ask Grubbly-Plank if she has any suggestions, both on the animals and how to help them after. Leave it to me.