Collector James Cranfield says "it's like a dream" to acquire the head for £62,600.
Originally thought to be a fox, it was later identified as a rare animal that died out in the 1930s.
The five-year-old elephant seal attracted global attention during his recent time ashore in southern Tasmania.
An investigation found that 177 human specimens from dozens of bodies were secretly kept by a museum.
Guernsey's Megan Chapple was part of the first team of athletes to run 308km across Tasmania.
The Guernsey runner completes the feat as part of a six-person team.
Celine Cremer, 31, disappeared after going on a hike in a rainforest in June 2023.
Researchers have used photos and records to create what Anglesey prisoners may have looked like.
Spirit of Tasmania IV spent about six months docked in Leith because it is too big to fit the port it was designed to serve.
