Latest

Ocean eddies are coherent, rotating features which are ubiquitous at mid-latitudes and rotate clockwise In the Northern Hemisphere.

As these anticyclonic eddies move throughout the open ocean, a recent study suggests that the predators are also moving with them, foraging on the high deep-ocean biomass which tends to accumulate within.

Although manta rays are readily capable of long-distance movements of hundreds if not thousands of kilometres, most populations appear to be philopatric (tending to return to or remain near a particular site or area—ed.) with few examples of long-distance dispersal.

Oceanic manta rays, the largest ray species, were listed as threatened under the U.S. Endangered Species Act in 2018. In 2019, their threat category increased from vulnerable to endangered on the International Union for the Conservation of Nature’s Red List.

In 2015 and 2016, researchers observed and filmed instances in which gloomy octopuses (Octopus tetricus) in Jervis Bay, Australia threw debris around themselves and sometimes at other octopuses.

This was the first time such throwing behavior has been observed in octopuses.

What was going on? Were these intelligent creatures merely rough-housing or having a pillow fight?

Led by Peter Godfrey-Smith at the University of Sydney, the researchers analyzed 24 hours of footage and identified 102 instances of such behavior amongst a group of about 10 octopuses.

After two years of disruption because of the pandemic, DEMA Show was back in gear. Well, largely. It was still markedly more compact than the pre-pandemic editions but still a large show with far more booths than one could reasonably manage to visit during its four days. Also importantly, the mood appeared to be upbeat, with businesses eager to ramp up activities as the industry and travel activities pull away from the doldrums.