Dear colleagues, The following paper has recently been published in African Journal of Marine Science: Carvalho I, Brito C, dos Santos ME, Rosenbaum HC. (2011). Waters of São Tomé: a calving ground for West African humpback whales? African Journal of Marine Science, 33(1): 91-97.doi: 10.2989/1814232X.2011.572353 Abstract: In the Southern Hemisphere, humpback whales Megaptera novaeangliae feed in Antarctic waters during the austral summer and migrate to their breeding grounds in subtropical and tropical waters during the winter. Historical whaling records suggest that the Archipelago of São Tomé and Príncipe, located in the Gulf of Guinea, serves as a possible breeding ground. In order to investigate the temporal occurrence and group composition of humpback whales around São Tomé Island, annual surveys were conducted during the breeding season between 2002 and 2006. A total of 186 boat-based surveys took place during this period. Data collected during each sighting included geographical positions, group size, group composition and behavioural classifications. Of the 66 groups encountered, mother-calf pairs made up a large proportion (65.15%), followed by solitary individuals (15.15%). Mother-calf pairs were seen in the region into November and resights of identified animals indicate periods of occupancy that extended over three weeks. Few behaviours typically associated with mating activity were observed. Given the high percentage of mother-calf pairs, sometimes with very young calves, and the low frequency of mating activity, the waters of São Tomé may primarily serve as a calving and nursing or resting area for humpback whales. The article can be obtained from the journal website: http://www.ajol.info/index.php/ajms or by contacting: icarvalho@amnh.org <https://webmail.amnh.org/src/compose.php?send_to=icarvalho%40amnh.org> Best regards, Inês Inês Carvalho, PhD student Sackler Institute for Comparative Genomics American Museum of Natural History Central Park West at 79th Street New York, NY 10024-5192 USA http://research.amnh.org/users/gamato/ Associação para as Ciências do Mar Edifício ICAT, Campus da FCUL, Campo Grande, 1749-016 Lisboa, Portugal