Posts By: David Muirhead

Jul 30

July 30, 1997

Silver Dory

Dory Diary

Whilst diving with Paul and Leona Fitzgerald on the Noarlunga Tyre Reef on 30/1/97 I chanced upon a very distinctively shaped fish lurking close to a tyre pyramid. Though I cannot recall ever sighting one during my years of diving in SA waters, I was quite sure this was a Dory. I hoped that it would oblige me by either being approachable or, at least,seeking refuge within a pyramid (as other species on tyre reefs often do, notably Bullseyes, Black-spotted…

Posted in Dive Reports | By

May 30

May 30, 1997

Corals & Sponges

Growing A Mineral Base For Coral Growth

The January 17 issue of “Australian Doctor” told of the use of electricity to create a base that coral could grow on. Dr Karl Kruszenelnicki’s “Wierd Science” column tells how magnesium and calcium-based minerals build up when electricity is passed through sea water. A layer of minerals 20cm thick took three years to build up. These acted as a base for corals and other animals to attach to. This mineral accumulation works on old cars, seals off potential toxins and…

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Mar 1

March 1, 1997

Old Wives

Fish species seen on Dredge and Barge wrecks off Glenelg (1988-1996)

Below is a list of fish species sighted by Society member David Muirhead on the Dredge and Barge wrecks off of Glenelg between 1988 and 1996. COMMON NAME FAMILY GENUS SPECIES Boarfish, Brown-spotted Pentacerotidae Paristiopterus gallipavo Boarfish, Long-snouted Pentacerotidae Pentaceropsis recurvirostris Bullseye, Common Pempheridae Liopempheris multiradiata Catfish, Estuary Plotosidae Cnidoglanis macrocephalus Coral Fish Chaetodontidae Chelmonops truncatus Cowfish, Shaw’s Ostraciidae Aracana aurita Drummer, Silver Kyphosidae Kyphosus sydneyanus Flathead, Dusky Platycephalidae Platycephalus fuscus Flathead, Tassel-snouted Platycephalidae Thysanophrys cirronasus Garfish, SA Hemiramphidae Hyporamphus…

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