Marine mammals face a large array of stressors, including loss of habitat, chemical and
noise pollution, and bycatch in fishing, which alone kills hundreds of thousands of marine …

Assessing the non-lethal effects of disturbance and their population-level consequences is a
significant ecological and conservation challenge, because it requires extensive baseline …

Sexual segregation in foraging is predicted from the great size disparity of male and female
northern elephant seals, Mirounga angustirostris. Our aim was to test this prediction by …

The mesopelagic zone of the northeast Pacific Ocean is an important foraging habitat for
many predators, yet few studies have addressed the factors driving basin-scale predator …

Locomotor activity by diving marine mammals is accomplished while breath-holding and
often exceeds predicted aerobic capacities. Video sequences of freely diving seals and …

Sleep is a crucial part of the daily activity patterns of mammals. However, in marine species
that spend months or entire lifetimes at sea, the location, timing, and duration of sleep may …

Environmental changes (a type of disturbance) are altering the habitat of southern elephant
seals Mirounga leonina, an apex marine predator in the Southern Ocean. As a result …

Foraging by mammals is a complex suite of behaviors that can entail high energetic costs
associated with supporting basal metabolism, locomotion and the digestion of prey. To …

Aquatic animals use a variety of strategies to reduce the energetic cost of locomotion.
Efficient locomotion is particularly important for breath-holding divers because high levels of …

To gain insight into the foraging behaviour of deep diving seals, we developed a long‐term
jaw‐motion recorder, which successfully measured the feeding attempts of four post …