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Sea urchin survey system in coastal areas using a μ-ASV

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Abstract

Currently, the phenomenon of ocean desertification, known as rocky shore denudation, is occurring all over the world. One of the causes is the feeding damage by sea urchins on seaweed beds called seagrass beds. To restore the seaweed beds, it is necessary to exterminate the proliferating sea urchins. We have developed an automated survey system that provides information on sea urchin habitat distribution and seafloor topography to streamline the extermination process. Based on a small surfboard-based ASV developed in our laboratory, an underwater camera and sonar are attached to the ASV (autonomous surface vehicle), which navigates automatically to collect data. By analyzing the obtained data, we were able to obtain the habitat distribution of sea urchins and a topographic map of the seafloor, which are necessary for sea urchin extermination.

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Acknowledgements

This research was funded by the Ministry of Land, Infrastructure, Transport and Tourism's Sea Mobility grant. (FY2021 Demonstration Project on the Utilization of Next-generation Mobility in the Sea). The lithium-ion batteries for the u-ASV were provided by Furukawa Battery. This study was conducted by Yokosuka City, Nagai Fisheries Cooperative, and Marine Works Japan Ltd.

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Authors and Affiliations

  1. Tokyo University of Marine Science and Technology, Tokyo, Japan

    Makoto Morito, Junichiro Tahara & Kouki Yoshimura

  2. Marine Works Japan Ltd., Yokosuka, Japan

    Hiroshi Matsunaga & Kenichiro Sato

Authors
  1. Makoto Morito
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  2. Junichiro Tahara
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  3. Kouki Yoshimura
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  4. Hiroshi Matsunaga
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  5. Kenichiro Sato
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Correspondence to Makoto Morito.

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Morito, M., Tahara, J., Yoshimura, K. et al. Sea urchin survey system in coastal areas using a μ-ASV. Artif Life Robotics 29, 145–154 (2024). https://doi.org/10.1007/s10015-023-00910-x

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  • DOI: https://doi.org/10.1007/s10015-023-00910-x

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