The North Sea is one of the most heavily used shelf regions worldwide with a diversity of
human impacts, including shipping, pollution, fisheries, and offshore constructions. These …

Cooperative hunting involves individual predators relating in time and space to each other's
actions to more efficiently track down and catch prey. The evolution of advanced cognitive …

Longitudinal data on individual growth and seasonal changes in body mass, girth, and
blubber thickness are rarely available for cetaceans, making it difficult to assess their …

The harbor porpoise (Phocoena phocoena) is one of the most abundant coastal cetacean
species in the Northern Hemisphere with differential levels of regional knowledge. Gaps are …

Among the taxonomic family of porpoises (Phocoenidae), mating behavior in nature has
been described in detail only for the harbor porpoise (Phocoena phocoena). We review this …

Photographic identification is increasingly being used as a cost-effective and minimally
invasive method to monitor species, which is of particular importance for endangered …

Historically, traditional photo-identification (photo-ID) methods have been applied to
cetaceans with relatively small group sizes, closed and/or small populations, distinctive …

Toothed whales are the ideal model to validate the hypothesis that the complexity of sound
communication relates to sociality. Compared to the numerous studies on several toothed …

The social structure of animal populations is a fundamental component of their biology,
influencing gene flow, habitat use, competition and co-operation around resources, and …

The Indo-Pacific finless porpoise (Neophocaena phocaenoides) occurs year-round in
waters of southern and eastern Hong Kong. The population biology of the population was …