"Joe" wrote
| The underwater ones for sure. I wonder if designers even think of such
| things.


They have snails that breathe underwater. They put them in salt water aquariums and they
crawl around inside and clean up the glass. They work pretty good. :-) Now, how could you keep
them on those under water windows? They might like the hull better.
That makes me think of something. One of those rude *down under* people made fun of me
for saying "windows in the hull". Are those windows in that habitat hull? If they ain't windows
what are they?

Cheers,
Ellen