Thrombolites,Lake Clifton

Ever seen this before? Cheers! Sam.

I guess a little more detail to what I'm looking at would help. I have a bio background and spend lots of time on the coast but I'm still left wondering what I should be focusing on.

Jim,thanks very much for your critique & questions. I've attached a more detailed close-up. Although it's still under the water surface, it might give you a better idea. If you'd like to know more, it can befound here:http://www.naturebase.net/national_parks/previous_parks_month/yalgorup.html where it says:

'The thrombolite-building micro-organisms of Lake Clifton resemble the earliest forms of life on Earth. The discovery of modern examples helped scientists to understand the significance of micro-organisms in the environment and unravel the long history of life on Earth. These organisms were the only known form of life on Earth from 3500 million to 650 million years ago. The thrombolites and stromatolites they constructed dominated the clear, shallow seas of this period and formed extensive reef tracts rivalling those of modern coral reefs. Similar organisms, for instance, helped to form the rich iron-ore deposits of the Hamersley Range, in the Pilbara's Karijini National Park, some 2000 million years ago. At this time oxygen made up only one per cent of the atmosphere. When there was no more iron to precipitate, the free oxygen leaked into the atmosphere until it formed 21 per cent of atmospheric gases.' Cheers, Sam.

 

You learn something every day. Great subject.

Photographically I think keeping the white object out of the bottom right corner and possibly using a circular polarizer might strengthen your image.

Subject wise now that I know what I'm looking at I think seeing the large numbers of these objects is nice , but seeing a few together in a closer crop also might be a strong image.

Jim, ha ha! in my enthusiasm for the thrombolites I've photographically overlooked that piece of wood of the jetty I stood on! Now I'm attaching a picture which might please you more, taken at another time of the year, but with the thrombolites still under water. In a month or so, some of them will have surfaced as the lake water level is going down in this dry season & I'll have a go at it again. Thanks very much for your comments & appreciation. Cheers, Sam.