Urechis unicinctus Transcriptome or Gene expression. Urechis unicinctus

Urechis unicinctus, a benthic marine worm inhabiting widely in the coast of Russia, Japan, Korean Peninsula and China, presents special biological characteristics in morphology, reproductive and developmental biology as well as physiology. It could exist in condition of low oxygen, high sulfide and pollution where most animals could not live.However, the molecular mechanisms of resistance are still unknown and the main obstacle to further study is the limited genomic and genetic information.