May 15

May 15, 2018

More About The ‘Edithburgh Anchor’

Steve Simmons has now sent us some further details regarding the anchor newly discovered at the Edithburgh swimming pool: – “Hi Steve, just a follow up on the anchor, I’ve now placed a guideline from one of the old sea net pylons all the way to the anchor about 200m. The Edithburgh swimming pool (Photo taken by Steve Simmons) Of... Read more

Posted in Maritime History | By

May 14

May 14, 2018

Sprouting Sand Sponges

Our participation in iNaturalist has created some discussion that has almost cleared up an enduring mystery about the identification of this creature: – Image No.2555 from MLSSA Photo Index (Taken by David Muirhead) It has been some 11 years since my article titled Sponges of the Genus Ciocalypta was published in our May 2007 newsletter.  In that article, I wrote... Read more

Posted in Marine invertebrates | By

May 8

May 8, 2018

More Tropical Fish Cleaners

I recently came across this photo of a sunfish (Mola) at Nusa Lambongan, apparently being cleaned by bannerfish (Heniochus) posted by PT Hirschfield of Pink Tank Scuba on her Facebook page. Heniochus banner fish cleaning a sunfish (Image supplied PT Hirschfield / Pink Tank Scuba) The apparent cleaning of the sunfish by the bannerfish caught my eye. The situation is... Read more

Posted in Bony fishes | By

May 7

May 7, 2018

More About the Star of Greece Anchor at Semaphore Jetty

Just in case you miss it, I have now updated my article Some Anchor Stories after locating this old photo of the Sea Captains’ Memorial at Semaphore: – The Star of Greece anchor mounted on a large brick wall (Taken by Steve Reynolds) This photo shows the original site of the Captains’ Memorial between the Semaphore jetty and the Palais building. There was... Read more

Posted in Jetties, Maritime History, Shipwrecks | By

May 3

May 3, 2018

Tropical Stromb found on Largs Bay Beach

Steriyoula Thethes recently posted some photos of a couple of shells from Largs Bay beach on the SA Natureteers Facebook page, as follows: – (Photos courtesy of Steriyoula Thethes) “A new species of shell, Largs bay. And the last image of a shell that is becoming more common in the same area of Largs North”, said Steriyoula. There were a... Read more

Posted in Marine invertebrates, Molluscs | By

Apr 22

April 22, 2018

The discovery of tiny Upside-down Jellyfish, Cassiopea ndrosia, in West Lakes

As a result of my first discovery of Upside-down Jellyfish, Cassiopea ndrosia, in December 2016 (The Upside-down Jellyfish, Cassiopea ndrosia ), I was able to recognize the species occurring in the hundreds when I dived in West Lakes in March 2018. I first saw a single tiny specimen: – I moved in to take a closer look: – A little... Read more

Posted in Cnidaria, Marine invertebrates | By

Apr 4

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 more

Posted in Bony fishes, Sharks & Rays | By

Apr 4

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 more

Posted in Sharks & Rays | By

Apr 4

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 more

Posted in Cephalopods, Marine invertebrates, Molluscs | By

Mar 31

March 31, 2018

Some Anchor Stories

“Star of Greece” author, Paul Simpson says that this large anchor at Semaphore jetty is the swing anchor from the Star of Greece. The large Trotman anchor at Semaphore jetty (said to be the swing anchor from the Star of Greece) (Taken by Steve Reynolds) “It’s a Trotman anchor,” he says, “she carried two (Trotman anchors) and two admiralty patents... Read more

Posted in Citizen Science, Maritime History, Shipwrecks | By