|Credit, Guillaume Grosbois|
When Guillaume Grosbois and Milla Rautio visited Lake Simoncouche, Quebec, they didn't expect to see much life swimming about beneath the frozen surface. Certainly not bright red zooplankton!
But there they were - red copepods buzzing about in the dark water. Turns out these copepods spend their fall chowing down on algae and building up their store of fat for the winter.
You can learn more about these curious creatures, and watch a video of them here.