I have been back from Maine for a while now, but I have one more post from my trip. We went to an aquaculture place where they raise sea urchins. I thought it was pretty neat, so here is a description of the place.
The urchin aquaculture is located in the back of an old salmon processing plant. It’s run by a fellow named Hank who has been doing aquaculture in northern Maine for years and years. Here’s a picture of him showing the weird planktonic stages of urchin larva.
The urchins live out their planktonic stage in these blue vats.
When they get a little bit older they are drained out through a filter and placed in these tanks, which have seaweed in baskets in them. The urchins settle out on seaweed in the baskets.
You can’t see the urchins in there, they aren’t much bigger than the proverbial period at the end of the sentence. But give them time and food and they start growing. They get split up and moved to different baskets.
A lot of the grown urchins are housed in these stacks of troughs.
And that, my friend, is where baby urchins come from.