Viewing: April, 2018
April 4, 2018
The Removal of Shark Parasites
I recently saw some film footage on an episode of David Attenborough’s “Blue Planet II” showing several silky sharks, Carcharhinus falciformis, seemingly scraping parasites off of a whale shark, Rhincodon typus. It occurred to me that this was a form of fish cleaning to add to my growing list. I found confirmation of what I had seen on “Blue Planet... Read morePosted in Bony fishes, Sharks & Rays | By Steve Reynolds
April 4, 2018
The Lifespan and Maximum Length of Grey Nurse Sharks
According to the Facebook posting at https://www.facebook.com/FisheriesWA/photos/a.264218617326814.1073741827.246412385774104/486516945096979/?type=3&theater , a tagged 2.5 metre grey nurse shark, Carcharias taurus, caught by a recreational fisher in WA had been caught and released by Fisheries scientists 23 years earlier. Back in 1995, the shark was nearly 1.9 metres long and it was estimated to be four years old. This would mean that the shark... Read morePosted in Sharks & Rays | By Steve Reynolds
April 4, 2018
The blanket octopus, Tremoctopus violaceus
Andrew Wright, General Manager for Calypso Star Charters, recently sent us some photos of what he thought was a blanket octopus that had swum into their shark viewing cage at the North Neptune Island marine park on Good Friday. (Click on the following images to enlarge them.) The octopus that swam into the shark viewing cage (Photo courtesy of Andrew... Read morePosted in Cephalopods, Marine invertebrates, Molluscs | By Steve Reynolds