Observational studies describe rough-toothed dolphins (Steno bredanensis) actively foraging during the day on epipelagic species. Using data from depth-transmitting satellite

Spinner dolphins Stenella longirostris longirostris in Hawai‘i exhibit a predictable diurnal behavioral pattern which makes them vulnerable to human disturbance:

Of the 18 species of odontocetes known to be present in Hawaiian waters, small resident populations of 11 species—dwarf sperm

Although the Ziphiidae are the second-most speciose family of cetaceans, information on beaked whale species and populations has been limited

Despite their world-wide distribution throughout the tropics and subtropics, false killer whales (Pseudorca crassidens) are one of the lesser-known large

In the Pacific, rough-toothed dolphins (Steno bredanensis) are typically found in the open ocean and in deep waters around oceanic

We investigate diel variation in beaked whale diving behavior using data from time-depth recorders deployed on six Blainsville’s (Mesoplodon densirostris)

Most of what we know about cetacean biology and ecology comes from studies of relatively common species. Despite their distribution

Management agencies often use geopolitical boundaries as proxies for biological boundaries. In Hawaiian waters a single stock is recognized of

Anthropogenic activities must be monitored to determine effects on marine mammal species, but the difficulty lies in how to measure