I mention the date, because here are some raw ones I got almost 3 weeks later, on December 29, for only $1/lb. Aside from the price, note the difference.
That blueish stuff you see on the later shrimp is roe. It's mild tasting (not strong and salty like most fish roe), translucent powder blue, and if I could harvest enough, I'm sure I could sell it in Boston or NYC as a gourmet cracker-and-cream cheese item for $100/lb--hey, it was not easy wrestling all those blue eggs from those shrimp legs. As it was, I made some shrimp chowder (no photo) and used the roe for a garnish. I used lobster bodies and the shrimp shells for the chowder stock.
Here's the odd part: NEARLY EVERY SHRIMP IN THIS BATCH HAD ROE IN IT. The first batch 3 weeks earlier was roe free. This raised a lot of quesions. Were these all female shrimp or do males carry eggs, too, like seahorses? Did all the males go south for the winter after mating (men!). Are Maine shrimp bisexual or hermophroditic? Did this have anything to do with the Maine legislature voting down the gay marriage bill three months ago?
Here's what some brief research revealed: Northern Shrimp, Pandalus borealis, occur in the U.S. only in the Gulf of Maine. They begin their lives as males and switch to females about halfway through their 4-year life span. Note that in this shrimp tribe, it's always the older females spawning with younger males. In humans such older females would be called Cougars; in the shrimp world, they're called smart--younger males to spawn with, i.e., better broods.
Exactly how this gender switch takes place was not explained clearly--Wikipedia says magically "their testicles turn to ovaries"--but there's a moral here: when you study the real Mutual of Omaha's Wild Kingdom carefully, you discover some really wild stuff, and it ain't all grizzly bears and wolf pups.
So, the now transgendered M2Fs with their new reproductive capabilities come in from the cold water toward the shores to spawn in the winter, and that's where most of the commercial shrimping takes place. In other words, these were indeed all females in their new responsibility to produce shrimplings for the kindergarten at the end of the spring thaw. Perhaps the few roeless ones in this batch were some sympathetic males still waiting for their operations but wanting to swim with the girls. Personally, I feel awful about contributing to the end of so many future shrimp boys-who-become-girls, but I chowdered forward. Merci, mon crevettes.