There there. Easy girl. Shhhh. It’s ok.
Training is hard. You just have to settle and relax some. Maybe we need to try some ear plugs on you or a soundproofed bonnet. I don’t know about sea lions, but both have REALLY helped my mare lately, and I am getting much nicer, relaxed work from her.
I do have some pretty cool neoprene earplugs I use on my mare. Maybe a smaller version of these could fit in your little sea lion ears. The bonus? They’re waterproof!
ETA: here’s a picture. They are the EquiFit ones.