Ikea wouldn't sell the crab sticks. Cooked crayfishes are part of the swedish culture. They even have a summer party (kräftskiva) based on eating those. My father caught a lot also when he was young.

Red crayfish, they were quite small. Not a gigantic lobster (would love to try that too). My ex-girlfriend had hermit crabs as pets. These were smaller, and they sometimes attacked or ate each other (when vulnerable without shell due to losing skin), which put the cycle of life in perspective. Still felt a bit odd.