Metabolomic differences in the Ophiura sarsii complex from the Yellow Sea Cold Water Mass and Bering Sea Cold Pool

This dataset contains the untargeted metabolomics raw data for the Ophiura sarsii complex, comprising populations from two contrasting cold-water environments: the dynamic Yellow Sea Cold Water Mass (YSCWM, species: O. sarsii vadicola) and the stable Bering Sea Cold Pool (BSCP, species: O. sarsii).

The dataset includes raw data generated from two analytical platforms:
1. GC-MS Data (.d format): Acquired using an Agilent 7890B GC-5977A MS system.
2. LC-MS Data (.raw format): Acquired using a Dionex UHPLC-Q-Exactive MS system, encompassing both ESI positive (POS) and negative (NEG) ionization modes.

Experimental groups include regular extraction samples (OS, n=5; OSV, n=5), ethanol-pretreated exploratory samples (EOS, n=2; EOSV, n=2) designed to enhance polar metabolite detection, and pooled Quality Control (QC) samples.

These raw data support the integrated multi-omics analysis investigating the physiological plasticity and metabolic trade-offs—specifically concerning membrane lipid remodeling, energy allocation, antioxidant defense, and osmoregulation—of cold-water benthic echinoderms under global environmental shifts.