Topic outline

  • IMAI Keiri, OGUMA Kenji, and SAWADA Kouki, Oshoro-maru Marine Science Department, School of Fisheries Sciences, Hokkaido University

  • Introduction

    Smith-McIntyre Bottom Sampler (commonly known as “smikin”) is a kind of grab-type mud collector that is widely used to collect organisms (benthic organisms) such as shellfish, polychaetes, starfish, sea urchins, and other echinoderms that live mainly on the seafloor surface and in the sediment. Grab-type mud collectors are used to grab sediments like a "crane game" by lowering the bucket, which is open on both sides, to the desired location.

    The standard size Smith-McIntyre Bottom Sampler on the market collects surface sediments from the seafloor surface to a depth of about 20 cm. Since the entire sediment, which is the habitat of benthic organisms, is sampled, there is little damage to the biological samples.

    Because of its small size and light weight, this mud sampler can be used on small vessels with small observation facilities and few workers, and is used in relatively shallow waters, mainly in coastal areas. Another reason for their widespread use is their ease of handling.

    In this course, the Smith-McIntyre Bottom Sampler will be explained in detail.

  • 1) Structure of mud collector

  • 2) Operation of the Bottom-sampler

  • 3) Mud sampling procedures

  • Appendix: Setup procedure for mud collector

  • 【Related summary courses】

    Trainig Ship