Very nice level I wish there was less extreme precision necessary and more of the cool red snake.
I loved the occasional level transitions.

Also here are some things that might need to be ironed out with updates:

the final level can be skipped by going backwards if this is intentional maybe add something saying so.

Using the slow bubbles in two of the speed based levels (including the long final one) was not a fun addition... I made two whole noises of annoyance why'll playing please fix.

I don't want to bog down this comment with complaints to much I'm sorry if this came off overly negative.

This ones quite the challenge! Still haven't beaten it yet, but its pretty fun!
Honestly, I don't know where the exploration point in Waterpower is, but I think it should be moved to where all the piranhas are, I spent a while killing all the piranhas to see if the exploration point was up there and well, it wasn't.
Disregarding that, I had a lot of fun searching for some of the exploration points in the levels I had beaten!