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However, existing underwater haptic sensing technology remains challenged in discriminating similar physical properties among objects owing to strong hydrodynamic noise. Herein, we propose a triboelectric aquatic electronic skin (E\u2010skin) capable of decoupling tactile signatures arising from minimal differences in unsteady water flow and high hydrostatic pressure disturbance. This is achieved through a bioinspired fish lateral line mechanical design that integrates a bionic fish\u2010scale array to attenuate flow impact, thermoplastic polyurethane (TPU) powders to withstand hydrostatic compression, and an ionic hydrogel with asymmetric ion pairs to enhance signal output. The aquatic E\u2010skin exhibits high sensitivity to tiny vibrations caused by surface differences when sliding over objects. Leveraging a feature\u2010fusion machine learning, it extracts robust tactile vibrations during water flow motion and precisely classifies underwater minimal differences in texture and hardness, as well as roughness from 0.8 to 1600\u00a0\u00b5m. Additionally, integration of the E\u2010skin on a robotic fish demonstrates its potential in fish swimming state detection to achieve intelligent aquaculture. This AI\u2010enhanced E\u2010skin not only enhances the reliability of underwater minimal difference perception but also unlocks novel interaction capabilities for broad marine applications in disturbance\u2010rich aquatic environments.<\/jats:p>","DOI":"10.1002\/adma.72938","type":"journal-article","created":{"date-parts":[[2026,3,27]],"date-time":"2026-03-27T14:09:06Z","timestamp":1774620546000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["AI\u2010Enhanced Bionic Aquatic E\u2010Skin Enables Precise Capture of Minimal Tactile Differences Toward Undisturbed Underwater Interaction"],"prefix":"10.1002","volume":"38","author":[{"given":"Zhongtan","family":"Zhang","sequence":"first","affiliation":[{"name":"State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical Engineering Zhejiang University  Hangzhou China"},{"name":"Zhejiang Key Laboratory of Advanced Equipment Manufacturing and 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