Shopping for a faster framework for an existing animation

[GoodLookingSoftware]

The animation I built works, but is hopelessly slow. I'm hearing that I probably need to move it into canvas and probably use a library. What I can't figure out from shopping for a library is which ones can handle mouse events over stacked, mostly transparent layers (SVGs in this version). That will make more sense if you have a look at the animation where hovering over and clicking on the roots of the mangrove trees makes things happen. Alternatively, if you see something obvious that I could do to fix the performance of the animation as-is, that would be greatly appreciated.

 

Thanks!

Aaron