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Categories & Keywords

Subcategory:Marine Life
Subcategory Detail:
Keywords:cephalopod, longarm, octopus
Photo Info

Dimensions2256 x 2256
Original file size4.47 MB
Image typeJPEG
Color spacesRGB
Lanky Longarm after Earthquake (1 of 2)

Lanky Longarm after Earthquake (1 of 2)

Longarm octopus (Octopus defilippi)

Date taken: December 14, 2006 at 3:58pm
Dive site: Black Magic, Sangeang Island, Flores Region, Indonesia

The more I go through my octopus images, the more I'm amazed at their breadth in color, size, and camouflage. These are some seriously cool critters. They have three hearts and blue-green blood (the oxygen-carrying molecule in their blood is copper whereas ours is iron). They're also one of the most intelligent of animals as their brain-to-body ratio is the largest of all invertebrates. And, octopus arms can be given a task (get that food) and then their arms can decide how to accomplish the task, essentially acting on their own.

Now, back to the longarm octopus. It's not overly common but we've been fortunate to see a few. This is my very first encounter - way back in 2006 - on the volcanic island of Sangeang. An incredible spot; I remembered encountering an earthquake while we were diving there. Most of us thought a boat was overhead but it was the earth rumbling from the earthquake. To this day I still remember all of the divers being concerned that a boat was coming really close (we weren't all that deep). But, when we got back to our liveaboard (the Pelagian), they said - did you feel it? Wow, what an amazing experience. Oh, and we saw a longarm octopus! ;-)

Finally, the best part, in logging this image, I decided to see if there was any information about an earthquake that day (remember, I'm also a data person). Sure enough, I found an earthquake of 4.6 logged in the "Flores region, Indonesia" at 7:28:20 UTC which would have been 3:28PM local time. I remembered the earthquake being there but I didn't remember the exact dive. And, coincidentally, it was THIS dive!

My iNaturalist observation: