Lock-down Story No.4 – My Experiences with Sharks
It’s a wonder that I took up scuba diving at all after having seen the movie “Jaws” once or twice at that stage. I decided to take up diving after…
Sharks seek safety in submarine volcanoes
SHARKS SEEK SAFETY IN SUBMARINE VOLCANOES by Steve Reynolds (STEVE’S SDFSA SCIENCE STORY for the month of September) According to Hordes of sharks found living in volcano by Raffaella Ciccarelli,…
Raising Awareness About Shark Safe Behaviour and Alternatives to Baited Drum Lines and Shark Nets
Raising Awareness About Shark Safe Behaviour and Alternatives to Baited Drum Lines and Shark Nets Tony Isaacson recently posted these details on his Facebook page: – “I flag this video…
A Study of Melanism in the Black Manta Rays of the Indo-Pacific
A Study of Melanism in the Black Manta Rays of the Indo-Pacific by Steve Reynolds Melanism is “darkening of body tissues caused by excessive production of melanin, especially as a…
Algae
Bony fishes
Citizen Science
Coastal species
Dive Reports
intertidal zone
Marine invertebrates
Nudibranchs
Plants
sea urchins
Sharks & Rays
Species lists
Species sighted at Witton Bluff & Christies Reef
Species sighted at Witton Bluff & Christies Reef by Steve Reynolds As reported in My Early Diving Days , Witton Bluff is the high point on the coast between Port…
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…
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…
More About Tropical Fish Cleaners (esp. re Manta Rays as hosts)
A couple of things this week have spurred me on to write a couple of additional things about “Tropical Fish Cleaners and Their Mimics”. It started with a photo of…
Port Jackson Shark Aggregations
Recent aggregations of Port Jackson sharks at both Port Noarlunga and Aldinga created much interest in this annual event. I was encouraged to review past articles that were published in…
Great, scalloped or smooth? How to identify a hammerhead shark
As a South Australian snorkeler, typically drawn to shallow, inshore waters, I haven’t had first-hand contact with hammerhead sharks. As a child I found them fascinating; their distinctive T-shaped heads…