Despite being the second largest fish, basking sharks (Cetorhinus maximus) have been assumed to remain in discrete populations. Their known distribution encompasses temperate continental shelf areas, yet until now there has been no evidence for migration across oceans or between hemispheres. Here we present results on the tracks and behaviour of two basking sharks tagged off the British Isles, ...

The articles concern my recent work on the electric sense of sharks and rays. I have greatly advanced my theory of electromagnetic orientation, its theoretical foundations, and its application to the animals. I have furthermore developed a guided-approach algorithm explaining how sharks and rays cue in on the source of an electric field. Moreover, I have discovered in the electroreceptors a nov...

Intraguild predation and partial consumption of blue sharks Prionace glauca by Cape fur seals Arctocephalus pusillus pusillus C Fallows, HP Benoît & N Hammerschlag To cite this article: C Fallows, HP Benoît & N Hammerschlag (2015) Intraguild predation and partial consumption of blue sharks Prionace glauca by Cape fur seals Arctocephalus pusillus pusillus, African Journal of Marine Science, 37:1...

In both cases, I couldn’t have prevented the ensuing death. However, intuitively, whereas I am morally responsible (‘‘responsible,’’ for short) for Victim’s death in Shooting, I am not responsible for the child’s death in Sharks. Shooting is a ‘‘Frankfurt-style’’ case. In a Frankfurt-style case, it has been argued, an agent is responsible for something that he couldn’t have prevented. Thus, in ...

We present diving data for four whale sharks in relation to a predictable food pulse (reef fish spawn) and an analysis of the longest continuous fine-resolution diving record for a planktivorous shark. Fine-resolution pressure data from a recovered pop-up archival satellite tag deployed for 206 days on a whale shark were analysed using the fast Fourier Transform method for frequency domain anal...

Scientific monitoring has recorded only a recent fraction of the oceans' alteration history. This biases our understanding of marine ecosystems. Remote coral reef ecosystems are often considered pristine because of high shark abundance. However, given the long history and global nature of fishing, sharks' vulnerability, and the ecological consequences of shark declines, these states may not be ...

We analysed video records of three mating events involving nine free-living whitetip reef sharks in Cocos Islands, Costa Rica to examine reproductive behaviour in this species. We describe several behaviours never before documented in this species, and four behaviours never before documented in any elasmobranch. Here, we also present the first hypothesis for the function of the male’s paired re...

Sharks are a globally threatened group of marine fishes that often breed in their natal region of origin. There has even been speculation that female sharks return to their exact birthplace to breed ('natal philopatry'), which would have important conservation implications. Genetic profiling of lemon sharks (Negaprion brevirostris) from 20 consecutive cohorts (1993-2012) at Bimini, Bahamas, sho...