Researchers from the New South Wales (NSW) Department of Primary Industries (DPI) and Deakin University fitted an adult male shark with a pop-up satellite tag and tracked it for more than five months.

After being tagged, the shark swam more than 20km out to sea, then headed north to Queensland. 

It roamed between 80 and 280km offshore between Agnes Water and the southern end of the Great Barrier Reef, before heading to the cooler waters in southern NSW, Victoria and Tasmania. 

Palau’s Rock Islands experience consistently higher temperatures and extreme heatwaves, yet their diverse coral communities bleach less than those on Palau’s cooler outer reefs.

Scientists studying reefs in Palau have identified genetic subgroups of a common coral species that exhibit remarkable tolerance to the extreme heat associated with marine heatwaves.

The two cogs, named Varbergskoggen 1 and Varbergskoggen 2, were found at the former shoreline next to Varberg's medieval predecessor Getakärr. During the Middle Ages, Getakärr was a town in northern Halland, located immediately north of the current centre of Varberg, which is a city on the western coast of Sweden.