Category: Australia

The fragility of water on earth #marineexplorer #underwatersydney

The fragility of water on earth #marineexplorer #underwatersydney by John Turnbull

Via Flickr:

If the earth was a basketball, the oceans would wrap 70% of it at about the thickness of a piece of paper. Fresh water supplies are 1/50th those of salt water, so the patch of paper representing fresh water would be just 1.5% of the surface of the earth. That’s not much water, given it keeps life on earth alive.

The fragility of water on earth #marineexplorer #underwatersydney

The fragility of water on earth #marineexplorer #underwatersydney by John Turnbull

Via Flickr:

If the earth was a basketball, the oceans would wrap 70% of it at about the thickness of a piece of paper. Fresh water supplies are 1/50th those of salt water, so the patch of paper representing fresh water would be just 1.5% of the surface of the earth. Not much, given it keeps all life on earth alive.

Sepia mestus cuttlefish should change the sci name to Sepia cutest #marineexplorer #underwatersydney

Sepia mestus cuttlefish should change the sci name to Sepia cutest #marineexplorer #underwatersydney by John Turnbull

Via Flickr:

Time to petition the cuttlefish taxonomists. Camp Cove

Pretty boy - Enneapterygius atrogulare - Black-throat triplefin #marineexplorer #underwatersydney

Pretty boy – Enneapterygius atrogulare – Black-throat triplefin #marineexplorer #underwatersydney by John Turnbull

Via Flickr:

Many animal species are sexually dimorphic – ie the male and female look different. This is the male black throat triplefin, resplendent with black head and orange body. I suppose it means “aren’t I impressive, come mate with me” – but it also could mean “come eat me” to predators! The female is less showy (but also less likely to be a meal, perhaps), see: flic.kr/p/2idwsqB

Neither up nor down - Octopus tetricus #marineexplorer #underwatersydney #lapofaus

Neither up nor down – Octopus tetricus #marineexplorer #underwatersydney #lapofaus by John Turnbull

Via Flickr:

When you’re as flexible as an octopus you can make sure your eyes are always up – irrespective of whether your head is above or below them. I wonder if the octopus’ brain sees upside-down or corrects accordingly? Here’s an image of an octopus “right side up” if there is such a thing: flic.kr/p/2idzV8c . Camp Cove

Mecaenichthys immaculatus - Immaculate damsel #marineexplorer #underwatersydney

Mecaenichthys immaculatus – Immaculate damsel #marineexplorer #underwatersydney by John Turnbull

Via Flickr:

Quite a few immaculate damsels on today’s @reeflifesurvey #lapofaus at Camp Cove

Sprouts of hope #marineexplorer #Australianbushfires #Climatechange

Sprouts of hope #marineexplorer #Australianbushfires #Climatechange by John Turnbull

Via Flickr:

Gum trees and grass trees are starting to sprout, just a fortnight after bushfires tore through the Blue Mountains west of Sydney.

Pink seahorse pair, male with pouch on right, Hippocampus whitei #marineexplorer #underwatersydney

Pink seahorse pair, male with pouch on right, Hippocampus whitei #marineexplorer #underwatersydney by John Turnbull

Via Flickr:

Clifton Gardens

Bushfire sunrise over Sydney Harbour #marineexplorer

Bushfire sunrise over Sydney Harbour #marineexplorer by John Turnbull

Via Flickr:

The smoke in the air casts an orange pall over Fairlight, Sydney Harbour, on a day with 130 bushfires burning in NSW alone and the mercury at Epping currently sitting at 44C.

Spotted wobby in the sand Orectolobus maculatus #marineexplorer #underwatersydney

Spotted wobby in the sand Orectolobus maculatus #marineexplorer #underwatersydney by John Turnbull

Via Flickr:

We normally see wobbys sheltering under ledges and in caves during the day. Every now and then you find one in a peculiar place, like this one hunkered down in the sand in 8 m of water at Shelly Beach, Manly.