UMI-Underwater: Learning Underwater Manipulation without Underwater Teleoperation

• URL: http://arxiv.org/abs/2603.27012v1
• Date: Fri, 27 Mar 2026 22:01:19 GMT
• Title: UMI-Underwater: Learning Underwater Manipulation without Underwater Teleoperation
• Abstract summary: Underwater robotic grasping is difficult due to degraded, highly variable imagery and the expense of collecting diverse underwater demonstrations.<n>We introduce a system that autonomously collects successful underwater grasp demonstrations via a self-supervised data collection pipeline.<n>In pool experiments, our approach improves grasping performance and robustness to background shifts, and enables generalization to objects seen only in on-land data.
• Score: 14.624992211938155
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Underwater robotic grasping is difficult due to degraded, highly variable imagery and the expense of collecting diverse underwater demonstrations. We introduce a system that (i) autonomously collects successful underwater grasp demonstrations via a self-supervised data collection pipeline and (ii) transfers grasp knowledge from on-land human demonstrations through a depth-based affordance representation that bridges the on-land-to-underwater domain gap and is robust to lighting and color shift. An affordance model trained on on-land handheld demonstrations is deployed underwater zero-shot via geometric alignment, and an affordance-conditioned diffusion policy is then trained on underwater demonstrations to generate control actions. In pool experiments, our approach improves grasping performance and robustness to background shifts, and enables generalization to objects seen only in on-land data, outperforming RGB-only baselines. Code, videos, and additional results are available at https://umi-under-water.github.io.

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