Some fishes and sea turtles are distinct from ectotherms by having elevated core body
temperatures and metabolic rates. Quantifying the energetics and activity of the regionally …

Quantifying the energy requirements of animals in nature is critical for understanding
physiological, behavioural and ecosystem ecology; however, for difficult-to-study species …

Large-bodied pelagic ectotherms such as sharks need to maintain internal temperatures
within a favourable range in order to maximise performance and be cost-efficient foragers …

Movements of six basking sharks (4.0–6.5 m total body length, LT) swimming at the surface
were tracked and horizontal velocities determined. Sharks were tracked for between 1.8 and …

Whale sharks (Rhincodon typus)–the largest extant fish species–reside in tropical
environments, making them an exception to the general rule that animal size increases with …

White sharks (Carcharodon carcharias) are the largest shark species to display regional
endothermy. This capability likely facilitates exploitation of resources beyond thermal …

The fast swimming and associated breaching behaviour of endothermic mackerel sharks is
well suited to the capture of agile prey. In contrast, the observed but rarely documented …

Large pelagic fishes often dive and surface repeatedly as if they were airbreathers, raising a
question about the functions of these movements. Some species (eg, bigeye tuna, ocean …

Animal behavior should optimize the difference between the energy they gain from prey and
the energy they spend searching for prey. This is all the more critical for predators occupying …

Few fast-swimming apex fishes are classified as 'regional endotherms', having evolved a
relatively uncommon suite of traits (eg elevated body temperatures, centralised red muscle …