Investigations between 1985 and 1989 into the lion population in woodland habitat in the Etosha National Park, Namibia, facilitated by the individual marking of 83 lions, provide the background for a population estimate of 191 - 266 adult and sub-adult lions in the park in February 1989.
Variation in the number of laminae per molar, and in the number and position of foramina mentale in mandibles from elephants in the Etosha National Park rules out the use of referenced laminary counts for age estimation purposes. Premature loss of anterior molar fragments occurred in 18% of mandibles, as an additional source of confusion and subjectivity in the identification of age classes.
Visitor numbers to Sandwich were at a maximum from December 1989 through March 1990 and appeared to be directly linked to the availability of edible fish species (kob steenbras, galjoen, blacktail) which are seasonally abundant.
The freshwater medusa Limnocnida tanganjicae was collected during September in a small lake off the main stream of the Upper Zambezi River in Caprivi, Namibia. The transparent specimens ranged 5-2 mm umbrella diameter while the number of tentacles and statocysts were 80-560 and 60-360 respectively. Gonads could not be clearly identified. No polyps were found on the vegetation in the lake.