My first ever dissection

Not for the faint of heart but i dissected a lugworm yesterday and those things are pretty big! Basically these are the worms that lives in those little holes on the wet sand at the beach eating sand and such.

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*squeemish alert!*

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The worm has been farmed for the fishing industry so we didn’t mess with the ecology. Also, it’s been frozen to death well before the experiment.

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things we were suppose to look for. Never realised worms could be this fascinating!

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A microscopic look at the worm’s gills which are the little bushy parts and its cheatea which are those hair like bristles which helps the worm grip to the wet sand

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Close up look at its gills! basically little thin-walled fluid sacs which bridges the water outside to the fluid inside.


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the moment you make an incision, it deflates like a leaking water balloon!

The insides are pretty gross but once you get used to it, it’s actually really interesting. I am totally lucky cos when you puncture it, it’ll squirt fluid at you which is what happened to both my seat partners (who now owns  worm soaked lab coats) but i pricked mine with a little needle and it squirted it out into the bowl. haha.

First year is getting boring because all we get to work with is invertebrates. I can’t wait for next year when we actually deal with actual vertebrates. The kind of things you imagine zoologists to work with. Next dissection will probably be a frog where we give it a chemical to kill its brain but its heart and body still functions like normal. so we get to cut up a little zombie frog. Awesome!

regards.

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