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In particular, Notonecta glauca (or common backswimmer) swims on its back and will walk under the water surface searching for prey: https://www.researchgate.net/figure/Lateral-view-on-the-wate....
A beetle? In my aquarium I have snails walking upside down under the water surface!
Assuming it is the first, do they breach the surface tension?
A beetle? In my aquarium I have snails walking upside down under the water surface!
Limbless loco is a seperate story -https://en.m.wikipedia.org/wiki/Terrestrial_locomotion#Limbl...
Snails are pretty cool though with their mucus turning everyting around them friction free so they are badically ice skating. Have no clue what happens in water though.
A beetle? In my aquarium I have snails walking upside down under the water surface!
Just to clarify: are your snails walking on the water-air surface upside down? Or they are underwater but clinging to some surface other than the water-air one? Assuming it is the first, do they breach the surface tension?
This is a very common behaviour of pond snails. Just search "snail water surface" on google to see many pictures of it.
The beetle seems to do the opposite thing, though. It is buoyant so it floats to the surface, on which it stands and walks with its legs as it would do on the ground. The air\surface interface is very strong for small critters.
What a humourus coincidence that it was in Australia the upside-down walking beetle was found.
I bet his toilet flushes the other way too!!
I vaguely remember there's a science fiction story about an underwater civilization where the buoyant force servers like gravity for us. Since the force points outwards, for that civilization, the planet is "up above" their head and the space is "down below".
I vaguely remember there's a science fiction story about an underwater civilization where the buoyant force servers like gravity for us. Since the force points outwards, for that civilization, the planet is "up above" their head and the space is "down below".
https://eandt.theiet.org/content/articles/2017/02/science-fi...
How is this a story. I've seen this myself.
Not everything is going to be a new thing just for you. Don't you find it a little comforting that other people are now becoming aware that beetles are able to do this?