The post discusses the evolutionary relationship between shrimp, often considered sea creatures, and land arthropods (insects, arachnids). It presents the idea that while we commonly perceive fish evolving into terrestrial animals, it’s important to recognize the other direction: the adaptation of some terrestrial species back into aquatic environments. This reverse evolution is accompanied by interesting implications regarding dietary preferences and allergies in humans related to crustaceans. The conversation suggests a need for more scientific scrutiny on the dietary overlap between land insects and sea crustaceans.