David Muirhead

Joined: Oct 22, 2016 Last Active: Feb 28, 2021

Experienced amateur citizen scientist age 65 currently living in Normanville South Australia zip code 5204.
Keen snorkeler from childhood and scuba diver from age 16.Motto for most of my diving life became " Stay South, Young Man"
I lost interest in tropical diving quite early .Been there done that, pretty boring after first few trips(Fiji, Bali,GBR etc)The fish move but the mostly drab stony corals dont.A recent Ningaloo trip softened my stance somewhat.
But I prefer observing and photographing South Australian marine life, along with anything local,alive or dead,preferably not human .
Ever dived a temperate algal rainforest ? There's no going back...it'll change you.(Wearing my tattered medical hat reminds me: life expectancy drops a tad if you are in that herd of troppo leisure dive trippers. Greater risk of harm on tropic jaunts ,with higher health costs:cheap packages only tell half the story).
The under-researched temperate rocky reefs of Southern Australia fascinate me. The Great Southern(Rocky) Reef is larger, contributes more to carbon fixation,generates more oxygen and is more biodiverse than any tropical reef system, including the GBR.
'Dive' and 'Reef' are almost synonymous in our community's mindset ,so divers often bypass the full hand of other marine benthic habitats that provide unparalleled opportunities here inThe Unique South.We have the world's most diverse near-shore temperate marine habitat choices ,and many are suitable for shore access.Shallow bays, crystal rock pools galore ,some tidal, others deep yet amenable to safe exploration even as massive swells hammer the outer ramparts in spectacular fashion. Remote rocky headlands with splendid platform reefs, the world's most southerly mangroves,vast seagrass meadows,sponge gardens, amazing bryozoan reefs, you name it we've got it.Add in our surprisingly wide continental shelf with many offshore isles and WOW!
Shore snorkeling's a euphoric thrill along our thousands of km of accessible coastline.
Did you know that Southern Australia has the world's highest temperate marine biodiversity,and the world's peak marine ENDEMISM ? Goodbye Galapagos! Go Figure.If platypuses, roos, koalas, echidnas,peak avian and botanical terrestrial diversity are any guide to what we've got in our temperate marine backyard,then the marine life frontier is right here.The proportion of species that are undiscovered, undescribed, or known only from 1-2 museum specimens beggars belief.
Are you sad because southern Oz lacks crocs and pays for zoo pandas?
I'm ecstatic .
Life's ours for the making....eternity's waiting.(In the carbon cycle. The end!)

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