Just in case anyone is looking for a spare camera body (or a more cost effective entry point into M43. Olympus has a coupon for 20% off any outlet item today. Right now, a reconditioned EM1 or EM5 MkII works out to about $579US (not sure how much stock they have).
It has been a while since I went to the Galapagos. I don't really recall what kind of suit I wore. However, I do recall that I used a pair of gloves that were dual thickness. I just did a bit of searching and I found them again online. The brand is Seasoft. They make a 3mm/1.5mm glove that would fit the bill. Thumb and forefinger are 1.5mm, 3mm for the rest. Kevlar fingers and palm, which is handy due the barnacles in the Galapagos. Not inexpensive, by the way.