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It’s a “Newdybrank” | Exterior My Window

Gas flame nudibranch (photo from Wikimedia Commons)

16 March 2022

What looks like a glowing pincushion (above) or piece of plastic in the tweet below is an animal called a nudibranch. It’s not pronounced the way it’s spelled. The “ch” is a “k.” This is a “NEW-dih-brank.”

Nudibranchs are sea slugs whose name means “naked gills” though some of them have no gills at all. From a video at DeepMarineScenes I learned that nudibranchs are …

  • 3000+ species of sea slugs similar to snails but without any shells inside or out,
  • Found from the poles to the tropics, most often in shallow tropical waters,
  • Carnivores that eat sponges, corals, anemones, etc.
  • Range in size from 1/4 inch to 1 foot long,
  • Use smell and feel to get around. Their eyes sense only light and dark.
  • Brightly colored from the toxic things they eat.
  • Toxic themselves. Their color warns off predators.
  • Their only real predators are other nudibranchs. Yow!

Here are a few more species.

Red nudibranch (photo from Wikimedia Commons)
Nudibranch, Nembrotha lineolata (photo from Wikimedia Commons)
Nudibranch, Nembrotha kubaryana (photo from Wikimedia Commons)

Take a look at their lifestyle in a video from PBS.

For lots and lots of information about nudibranchs see this 5+ minute video from DeepMarineScenes: Facts: The Nudibranch.

(photos from Wikimedia Commons; click on the captions to see the originals)

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