News & Blog

Lovely Nudibranch

Posted on March 29, 2011

The account below is from the blog of the raft An-Tiki, <www.an-tiki.com> floating across the southern North Atlantic — among other chores, every once in a while they pull a plankton trawl and this nudibranch showed up among the sargasso weed.

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BP

 

Plankton

Alien Invasion?
Yesterday was a Plankton day and I was out with the net on a trail line to collect more samples forThe Sir Alister Harding Foundation for Ocean Science. As you will recall we are collecting a series of samples as we cross the Atlantic, at each location we take four “scoops” in a 24 hour day which are transferred to storage jars and preserved in Formalin. We do find it interesting as each time we seem to find something new, at least to our eyes. It never ceases to amaze us how much microscopic life there is in the sea. We really must take care of such a precious and vital ecosystem.
Yesterday was no different in the variety we saw, as I pulled in the net to find a “huge” visitor amongst the sample of tiny life that fuels our planet. He (or she) looked like something from the movie Alien and we were glad that in practice the creature was only a centimeter long (3/8 inch).
We suspect we know what our visitor is but are open to suggestions and comments!
We have continued west and the winds for the next few days are set fair for our chosen destination. The sun is shining and the seas are gentle so life is very pleasant. As you start your working week spare us a bit of sympathy as we reach for another book!
David and the crew.
Edited later….
The power of the internet is alive and well in the hands of a ballooning friend who, moments after reading the blog, STUMBLED UPON the identity of the creature!

image credit redbubble.com

“…
This particular one I’ve chosen to feature is commonly known as a Blue Dragon nudibranch. It spends its life floating on the surface of the ocean, much like the Violet Sea Snail. They feed on the poisonous Man of War Jellyfish, collecting the animal’s toxins and storing them in little sacs on the end of their feather-like “fingers.” The Blue Dragon can produce a much more powerful and deadly sting than the Man of War due to its ability to store the poison.”

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