Thursday, August 14, 2008

Coral Bay experience (3) - Giant Clams

These giant clams, or rather their mantles, look so beautiful! And they are easy to photograph too! Unlike the fishes, these won't run for their lives when you get near them.

The giant clam is everywhere around the coral reef. I am not even sure that I have taking photos of all different mantle coloration or patterns there are to be found in Coral Bay.


Tsun-Thai Chai said...

Like Denis asking whether the spangled emperor makes good eating, I wonder if anyone eat the giant clam. (We Malaysians eat clams, the small ones.)

Mosura said...

Great pics!

I was interested in what you said yesterday about the algae living within the mantle. This inspired me to dig deeper. Apparently the algae, zooxanthellae, produces much of the clams food by means of photosynthesis. Filter feeding alone is not sufficient to sustain the clam. Thanks for contributing to my education :-)

Tsun-Thai Chai said...

And because of their dependence on the algae, giant clams would spread their mantles when it's sunny and will not live too deep where sunlight can't penetrate. That's interesting. It's like if you are using solar panels, you don't want to live where there is little sunshine.

Anyway, when algae are ejected from stressed corals, the corals get bleached and die. I wonder if the giant clam will get eject its algae under any conditions. And then what will happen next? Will the clam still grow?

Anonymous said...

great photos..It is looked that u really have fun there =)

Tsun-Thai Chai said...

I sure did.