Tags » Cnidaria

Jelly and Jam

Organisms in the Cnidaria phylum consist partly of a of mesoglea, a non-living jelly-like substance, hence the name. They are simple, free swimming creatures, with a non-central nerve net and simple receptors functioning as a neural center. 26 more words

Animals

The Drift Line's Getting Slippery on the Northern Oregon Coast: By-the-Wind Sailors Wash Ashore in Great Numbers

Free-floating hydroids, by-the-wind sailors, Velella velella, have been washing ashore in great numbers, for weeks. It’s a fairly common event on Oregon beaches, but this happens to be one of the biggest I’ve seen, so I’m sharing a few images that captured my imagination. 166 more words

Nature

Taxonomist Appreciation Day: Use taxonomy to meet your hero? Ferdinando Boero did!

In 2003 I was illustrating animals for Grzimek’s Animal Life Encyclopedia; while doing research for the chapter on hydrozoans (relatives of  jellyfish), I learned that one of the species I was to illustrate was named after Frank Zappa. 179 more words

Illustration News

Natural high pCO2 increases autotrophy in Anemonia viridis (Anthozoa) as revealed from stable isotope (C, N) analysis

Contemporary cnidarian-algae symbioses are challenged by increasing CO2 concentrations (ocean warming and acidification) affecting organisms’ biological performance. We examined the natural variability of carbon and nitrogen isotopes in the symbiotic sea anemone Anemonia viridis to investigate dietary shifts (autotrophy/heterotrophy) along a natural pCO2 gradient at the island of Vulcano, Italy. 185 more words

Science

Egg Yolk Jellyfish

Phacellophora camtschatica, the Egg Yolk Jelly. Just by looking at it, you can tell where it got its name! These jellyfish can reach a size of about two feet across, with tentacles 20 feet long. 10 more words