Photo Adventures with Curiosity and Learning

May 30, 2009: Snorkelling around Mapur Island

This was mostly a sad, but in retrospect interesting, snorkel. There is much disease among the coral- maybe heat stress because the water is quite warm (need to get a thermometer to take next visit). But the temperature is much warmer than usual and from what I've read, the incidence of heat-stress responses and/or disease is much greater with higher temperatures.

Dying staghorn coral - Acropora cervicornis. All the photos are approximately geo-tagged - the gps was in the boat. Copy the image and look at the EXIF data

may 30 0499 dying staghorn

Bleaching of the table coral, Acropora cytherea

may 30 0507 disease

Quite sick Echinopora lamellosa

may 30 0512 dying coral

A school of fish feeding on something

may 30 0515 fish

Dead giant clam

may 30 0525 dead giant clam

Symbiotic relationship - Goby (perhaps Amblyeleotris japonica left) and pistol shrimp (?) (right). This is an interesting symbiotic relationship. The shrimp digs a burrow and share it with one or more Goby. Around sunrise the goby exit the burrow while the prawn does housekeeping - reopening the entrance if it collapsed during the night, and general cleanup. Then at sunset, the goby retreats to the burrow for rest and resovery while the prawn remains outside.

may 30 0559 symbotic

Two Goby serving guard duty for the prawn (inside the burrow). The Gobies also inhabit the burrow. Thus the entrance is Goby-sized instead of prawn sized

may 30 0571 guard duty

A shrimp aka prawn (crawfish) and his/her Goby guards

may 30 0575 crawfish

Another view of the Gobies and the entrance to their burrow

may 30 0576 guard duty

Out comes the prawn, cleaning the interior of the burrow

may 30 0583 crawfish

More house cleaning

may 30 0584 crawfish

House cleaning seems continuous

may 30 0588 crawfish

Prawn and Goby, guarding the entrance to their burrow

may 30 0612 crawfish

Need to identify this

may 30 0619 coral

Need to identify what is in the middle of the Acropora

may 30 0626 coral

Acropora with what appears to be something similar to white band disease

may 30 0629 dying coral

may 30 0632 dying coral

A response to heat-stress?

may 30 0643 dying coral

Need to identify this

may 30 0645 coral

Echinopora lamellosa - not healthy while to the right, it seems that the Acropora is healthy

may 30 0646 dying coral

may 30 0649 dying coral

may 30 0654 dying coral

Need to identify this

may 30 0663 coral

Honeycomb coral

may 30 0665 coral

may 30 0677 coral disease

Goniastrea (Honeycomb coral) with some white pox-like regions. Should have been closer

may 30 0682 coral

Giant clam

may 30 0687 giant clam


may 30 0701 giant clam

White band disease?

may 30 0706 table coral

Need to identify this

may 30 0713 coral

Dead giant clam

may 30 0718 dead giant clam

Live giant clam

may 30 0720 live giant clam

A blue giant clam

may 30 0722 giant clam

Heat stress?

may 30 0725 dying coral

may 30 0726 dying coral

Need to identify this

may 30 0727 coral disease

may 30 0728 dying coral

may 30 0729 dying coral

Giant clam

may 30 0732 live giant clam dead coral

Maybe white band disease?

may 30 0734 dying coral

This was interesting and I don't know what it is

may 30 0739 something

Finding Nemo

may 30 0740 nemo

Anemone, Heteractis magnifica, and clown fish, Amphiprion ocellaris

may 30 0741 clown fish

The basement membrane of the anemone

may 30 0743 clown anemone

? - no obvious white band

may 30 0744 dying coral

These appear different from the white banded bleached regions

may 30 0745 dying coral

may 30 0746 dying coral

Jumari - smiling as usual

may 30 0753 jumari

White band disease

may 30 300622 dying coral

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C. Frank Starmer