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 Hydra

 

 The stinging dancer

In almost every freshwater pond you can find this polyp attached to a substrate waiting for prey to come near it's deadly tentacles. Hydra is larger than one millimetre (my apologies) but it has many interesting aspects for viewing under the microscope. Like it's cousin the jellyfish, Hydra has so-called nematocysts, stinging harpoons, to paralyse it's prey. It can swallow a water flea as a whole. Many weird experiments have been conducted on the creature. It has for example been turned inside-out through it's own mouth-opening.

More can be read in the Micscape article: Hydra

THE INSTITUTE FOR THE PROMOTION OF THE LESS THAN ONE MILLIMETRE

Volvox

Bell animalcules

Noctiluca

 Starfish larva

Stentor

Diatoms

Bryozoans

Desmids

Spirogyra

3D through a microscope

 

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