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Polar_Mega_L_Tunnel_Tank

ice floe mesh filtering should be fixed now.
Some climb points might be off slightly, but close. Perhaps tweak in the future.

Also, the climb points etc. all got fixed, but waiting to solve an issue where the same Ice Floe can't be used more than once in the same tank, before updating.

Soon hopefully.

"It would be so cool to have tunnels under the walkway so the animals could "swim" between the two sections"

Agreed. Pretty sure we can use the bridge capability and I had planned to get to that for this (and other tunnel polar tanks) in the future.
The air sections can overlap, but there is no way to allow the animals to switch, so unfortunately can't (for now) take advantage in this tank.

It would be so cool to have tunnels under the walkway so the animals could "swim" between the two sections

Updated sides at entrance of tunnel at one end.
Fixed some climb points and containers on Ice Floes.
Mod has issue displaying all the meshes for Ice Floe when expanded.

Note beta release. Some iceFloe land and climb points will be fixed/changed.