Indicator bacteria and Salmonella spp. were investigated in both Chamelea gallina and seawater from six stations on the coastline of Sile, Turkey. Studies were carried out on 15 days from June to December in 1998–1999. Chamelea gallina samples which were collected at approximately 5–10 metres depth from the chosen stations were examined for faecal coliform, Escherichia coli and Salmonella spp. Bacteria numbers were highest in July and August. Bacteria distribution was found to be statistically significant between stations. No Salmonella spp. were detected in the samples.

Five of 26 flathead mullet (Mugil cephalus) captured in the Seekoei River estuary in South Africa showed haemogregarine infections. Both trophozoites and gamonts were observed, and image analysis technology was used in parasite morphometric description. Gamonts were compared with those of Desseria mugili from Brazil and found to be different. The parasite mostly closely matched a haemogregarine previously illustrated, but not described from South Africa, and apparent lack of merogony suggested that it was a species of Desseria.

Statolith validation and age and growth analysis was undertaken for the loliginid squid Loligo plei in the north-west Gulf of Mexico off Galveston, Texas. Statolith increments were shown to be laid down daily based on tetracycline staining of 19 individuals maintained in captivity. Ageing of field-captured individuals from late summer revealed that this species has rapid growth rates and a life span of about five months at least during the warm period of the year in this region of the Gulf of Mexico.

Otolith microstructure of the Russian sturgeon, Acipenser gueldenstadti was examined in adult samples collected in the Caspian Sea. The microstructure of the otolith was the same among specimens. The anterior side of the sagitta grew in two directions elongating both the long and short arms, and the long arm sections exhibited 14–21 distinct translucent and opaque zones. Otolith increments in this species can be used for age determination.