This is a dinoflagellat, which is not a dino egg, but a single cell organism that lives in a German lake.
Microscopic Photo of a Single Celled Organism
Photos by FEI; via But does it float
I wonder if this...bioluminescent dinoflagellate. I know they have them
Won’t lie- this made the nerd in my happy.
Does anyone else realize how fucked up the physical world is?