The lancelets (subphylum Cephalochordata, traditionally known as amphioxus) are a group of primitive chordates. They're usually found buried in sand in shallow parts of temperate or tropical seas. In Asia, they're harvested commercially for food for humans and domesticated animals. They're an important object of study in zoology as they provide indications about the origins of the vertebrates. Lancelets serve as an intriguing comparison point for tracing how vertebrates have evolved and adapted… (More on Lancelet)