caa a22 4500 465811205 CHVBK 20180323112116.0 cr unu---uuuuu 170327e19901001xx s 000 0 eng 10.1007/BF02124910 doi (NATIONALLICENCE)springer-10.1007/BF02124910 Photographic observations of deep-sea infaunal ophiuroids in Suruga Bay, central Japan: an application of a free-fall system of time-lapse cameras and current meters [Elektronische Daten] [Toshihiko Fujita, Suguru Ohta] Underwater observations of infaunal amphiurid ophiuroids were made at a depth of about 480 m in Suruga Bay, central Japan, using a free-fall system which consists of time-lapse stereo-photography units and current meters. The megabenthos fauna was characterized by the dominance of infaunal echinoderms; in particular, amphiurid ophiuroids were numerically dominant. The density and biomass of the amphiurids were 170 m−2 and 37 g m−2, respectively. They buried their discs in the sediment and extended their arm tips out of the sediment surface. They protruded 2.2 arms per individual on the average. Strong bottom currents were observed, and the average velocity was 12 cm sec−1 at 4 m above the sea floor. No arm tip was observed to be raised vertically into the water column for suspension feeding utilizing the bottom current, and amphiurids were considered to be primarily a surface deposit feeder at the present site. the Oceanographical Society of Japan, 1990 Fujita Toshihiko Nansei National Fisheries Research Institute, Sanbashi-dori 6-1-21, 780, Kochi, Japan aut Ohta Suguru Ocean Research Institute, University of Tokyo, Minamidai 1-15-1, 164, Nakano, Tokyo, Japan aut Journal of the Oceanographical Society of Japan Kluwer Academic Publishers 46/5(1990-10-01), 230-236 0029-8131 46:5<230 1990 46 10872 https://doi.org/10.1007/BF02124910 text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02124910 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fujita Toshihiko Nansei National Fisheries Research Institute, Sanbashi-dori 6-1-21, 780, Kochi, Japan aut NATIONALLICENCE 700 1- Ohta Suguru Ocean Research Institute, University of Tokyo, Minamidai 1-15-1, 164, Nakano, Tokyo, Japan aut NATIONALLICENCE 773 0- Journal of the Oceanographical Society of Japan Kluwer Academic Publishers 46/5(1990-10-01), 230-236 0029-8131 46:5<230 1990 46 10872 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer