[GingisK]

You can still learn a lot about them. On the other hand, they probably weren't all damaged and the fall into the water wasn't as bad as onto land. I presume you know how to take them intact?

My thoughts would be to bust the balloon and then catch it with one of those "sky hook" things they used to catch film canisters that were ejected from satellites. They don't have those anymore. Junked 'em.

[no-to-illegals]

Slow leak

[Nachoman]

Instruments don’t typically do well after being soaked in salt water.