This record is an overview entry for biological data collected on Soela cruise SO 2/81. This cruise took place in the Gulf of Carpentaria and the Arafura Sea, under the leadership of W. Okera. Biological data collected on this cruise include Simrad 11000 acoustic data. Species composition and weight by species of each demersal trawl and prawn trawl. Biological data were collected on: Carangidae; Clupeiformes; Leiognathidae; Scrombroidei; sharks; Sphyraenidae; Trichiuridae and a few other groups (see Appendix 1 of cruise summary). Size-sex data on Lethrinus nematacanthus (1086), Lethrinus choerorynchus (213), Lethrinus lentjan (204), Lethrinus laticaudus (66), Scolopsis taeniopterus (686), and Polynemus specularis (182). Liver samples for electrophoretic studes from L. nematacanthus (525) and L. choerorynchus (50). L. nematacanthus and S. taeniopterus specimens retained for meristic and age determination studies. Surface plankton samples for phyllosoma larvae.(derived from the cruise report) - Biological data is available via Data Trawler. - Biological Field Data Sheets recorded during this voyage have been scanned to PDF, and are available on-line at http://www.marine.csiro.au/datacentre/process/data_files/BioData/log_sheet_scans/BOX_AB2009_518/BOX_AB2009_518_index.htm