May 2012 downloadable issue is now available
This month’s issue is 35 pages in length (PDF), is a 11.3 MB download, and only costs $0.99! It comes in three formats (PDF, Kindle, and Nook) which makes it great for taking it wherever you go.
May 2012’s Most Popular Posts
Many people have heard about mass beaching of whales or dolphins every year, but how many of you have heard about mass beaching of crown-of-thorns starfish?
OpenROV 2.2 is 300mm long, 200mm wide, and 150mm tall. It displaces approximately 2.5kg of water and has a theoretical depth capability of approximately 100m. Photo by Sam Kelly.
Remotely operated vehicles (ROVs) are highly maneuverable, unmanned, underwater robots that are controlled typically through a tether that attaches the robot to a controller on the surface.
Razor clam shells on the beach. Photo by Arne Hückelheim, Wikimedia Commons.
Razor clams, Ensis spp., are an intertidal / subtidal clam that lives in the mud and sand. In addition to digging 30 inches into the sand, they can also dig at a rate of 0.5 inches per second.
The deep sea submarine, ALVIN, operated by the Woods Hole Oceanographic Institution.
It was assumed that routine cleaning of subs like Alvin after surfacing would take care of the bulk of the hitchhikers with the remainder killed due to depressurization as the sub rose to the surface after a dive.
Video: NatGeo