That girl swimming up above is not me. Look for me in a highly attractive silver and pink wetsuit borrowed from my friend Jaimie. I will be donning it as I swim around the coral reefs of San Salvador Island in the Bahamas participating in ongoing research of coral reef bleaching. My chemistry students back home in Utah will also be doing research and taking data related to this issue... but they don't get to swim. Sorry guys.

Monday, February 25, 2008

Sessile animals are even easier to take pictures of

Yup, these are animals. No feet, no eyes, no fur, pretty unstimulating social lives, and yet they fit the definition of the animal kingdom: heterotrophic, multicellular, etc.

Coral are sessile animals which means they don’t move. They do have mouths which they use to filter food from the surrounding water, but they also get much of their food from a symbiotic relationship with algae. So, basically, the coral just sit in one place their whole life, look pretty, and food is brought straight to them. Do you know anyone like that?

The coral and the algae together form a reef that is the habitat for thousands of species. Algae provides most of the food and coral does a nice job providing shelter. The research I am doing here in the Bahamas involves tracking the coral populations to see whether they are indeed bleaching and declining. So the ecologists who are in charge of the project are teaching us how to identify and assess various coral.

Here are a few of the coral we’ve seen. Yea sessile animals! I keep trying to take pictures of fish and they have no skills whatsoever in terms of posing. Coral on the other hand know exactly what it means to sit for a picture.

Smooth Brain Coral. Pretty perfect name eh?

Sea Fan: a type of soft coral.

Dead Man’s Fingers: this one looks a bit bleached in the picture, but it’s not, it was much more purple in person.

2 Comments:

At February 25, 2008 11:04 PM , Blogger Noah said...

Greeting Shea

Best of luck with the fish pictures!
Can't tell you how many shots I've taken showing only the back half of rapidly retreating fish.

Sounds like you are having an awesome time. Keep up the exciting work!!

-Noah Doughty
MCP Science Teacher

 
At February 26, 2008 2:17 PM , Anonymous Anonymous said...

brain coral is so cool i was sitting here looking at it and Ian was all like ew thats so gross and i was all like do u wanna go to the mall jk but it'd be so cool to touch how big is brain coral?

 

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