The sea pig, Scotoplanes globosa — a deep-sea sea cucumber
Via Echinoblog: http://echinoblog.blogspot.com/2009/07/because-you-demanded-it-sea-pig-aka.html
Images 1 and 2: Via Wikipedia. Link 1; link 2. Lindberg, 1882, Report on the scientific results of the voyage of H.M.S. Challenger during the years 1873-76 : under the command of Captain George S. Nares, R.N., F.R.S. and Captain Frank Turle Thomson, R.N. (public domain)
image 3: (the shiny pink one — source)
Image 4: (the sinister-looking one — source)
Image 5: (the other pink one — source)
Image 6: (the toy — source)
Apparently it’s even been made into a toy by Agatsuma! Available on ebay.
Caption: “Intercalation induces structural distortions. Left: unchanged DNA strand. Right: DNA strand intercalated at three locations (black areas).”
“In chemistry, intercalation is the reversible inclusion of a molecule (or group) between two other molecules (or groups). Examples include DNA intercalation and graphite intercalation compounds.”
From the Wikipedia article on “Intercalation”
More animations from this Wikimedia gallery of animations from Conway’s Game of Life!
Pulsar (period 3)
Another 3-period oscillator
This one’s also really cool, but it’s not uploading for some reason