These tiny octopus are very active swimmers and I must say were one of the most challenging animals I've ever tried to photograph. But after lots of failed attempts, I ended up with a few decent images under the microscope. Here are some nice examples of these wonderful octopus a few hours after hatching!
A rare view from the side:
And a close-up showing the small but well-developed suckers at the base of the arms:
Are you wondering just how small these octopus hatchlings are? Eric helped me with a short video clip to visualize their size. In the video, those are millimeter marks on the ruler below the octopus. (Video quality will be best with the smaller screen.)
The octopus are ~3.5 mm long when fully extended. That's much smaller than a grain of rice!