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.
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.
things we were suppose to look for. Never realised worms could be this fascinating!
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
Close up look at its gills! basically little thin-walled fluid sacs which bridges the water outside to the fluid inside.
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!