Lady Slippers growing wild in the Gagetown training area.
One of the really neat things about army bases is that large tracts of land get protected from most human use and are remote enough to be largely free from many invasive species. These endangered plants were in Area 50, a low-traffic part of the base, but were thriving despite the foot patrols going on through the patch of hundreds of these flowers. These are the provincial flower of my home province of Prince Edward Island, but are so rare that I’d never seen one alive before.
A wrecked Zeppelin sits ashore in Mison, France, 1918.Photograph by Paul Thompson, National Geographic
This is actually a test showing how sponges pump water through themselves for filter feeding!
They simply colored the water around them so you could easily see the process.