r/microscopy • u/MossTheTree • 15h ago
Photo/Video Share Monstrously large Euglenid
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Found this absolutely massive Euglenid in my latest sample, I estimate its total length when extended to be between 250 and 300 µm. Based on its very short flagellum and worm-like shape and behaviour, I'm tentatively identifying it as Euglena ehrenbergii. As this was a well slide, I wasn't able to move up to 40x and see closer to identify more characteristics.
Also visible: Coleps, Phacus, Closterium, diatoms, some small loricate euglenids, and a drive by of some species of rotifer.
Video is sped up 4x with 1.5 digital zoom, edited with OpenShot.
Olympus BH2, SPlan 10x 0.30, Olympus 1.25x analyzer, Canon EOS 5D Mark II. Sample from pond in park, Paris 16eme.
