Here's the thing that happened (before the vault wipe):
I'm used to jump and sneak my avvie thru walls up to the upper cave. From there, I push the 2 upper baskets in the pond. Then, I use the 3rd basket the one already in lower cave. I make all the bridges then link to Kemo to grab just once the fireflies.
So I did that, it just turned out that the 3rd basket disappeared during that process (before linking to Kemo) so I placed the only basket I had for the big gap parallel to my course. As soon as I walked back with my fireflies, I litteraly forced the basket to roll under my feet so I was able to end up in lower cave without having touch the water.
After the vault wipe:
I played the normal way every explorer is used to: linking twice to Kemo, building a 1st bridge then a 2nd bridge, etc. Like Wamduskasapa said, when I linked back with my fireflies, I had only 1 basket left, fireflies all around my avvie, so I linked my 2nd avvie to rescue me. After I crossed the first bridge, she pushed the only basket left and she build a 2nd bridge (putting it parallel to my course) and she stood in the gap. It was very perilous and if it was in real life, I would have closed my eyes. I can't explain how I made it across the water with no injuries, I think my other avvie has bruises all over her body though
