This record is an overview entry for biological data collected on Soela cruise SO 1/87. This cruise took place in the east Indian Ocean during 10 January - 7 February 1987, under the leadership of Tim Davis. Biological data collected on this cruise include a large number of scombrid larvae (particularly southern bluefin tuna) for biological studies and information on the vertical distribution of the larvae. Phytoplankton and zooplankton samples to investigate the plankton variability. Three tuna from troll fishing and a collection of tuna of all species for scanning and transmission electron microscopy. Information on experimental fishing and sampling methods and data from the EK 400. Please note: This metadata record is a preliminary entry derived from information in the cruise plan and/or cruise report. Individual data types - which may span several cruises - will be indexed separately within this metadata system in due course.