Monitoring spatial and temporal patterns in cetacean abundance involves a variety of
approaches depending upon the target species and the resources available. As a first step …

This paper is part of a comprehensive review of the oceanography of the eastern tropical
Pacific, the oceanic region centered on the eastern Pacific warm pool, but also including the …

Marine spatial planning provides a comprehensive framework for managing multiple uses of
the marine environment and has the potential to minimize environmental impacts and …

1. Megaplanktivores such as filter-feeding sharks and baleen whales are at the apex of a
short food chain (phytoplankton-zooplankton-vertebrate) and are sensitive indicators of sea …

Humpback whales were hunted commercially in the North Pacific until 1966 and remain on
the endangered species list at the time of this report. The degree to which they have …

After a brief description of purse seining and the other methods used to catch yellowfin tuna
in the eastern Pacific Ocean, some consideration s are made on the tuna--dolphin …

The right whales, Eubalaena spp., are identified by their robust body, black coloration, lack
of a dorsal fin, callosities on the head region, and large, strongly bowed lower jaw (Fig. 2) …

Dolphins and porpoises in coastal and/or riverine habitats face serious conservation threats,
yet surveys of their abundance are often especially difficult due to the challenges imposed …

As awareness of the effects of anthropogenic noise on marine mammals has grown,
research has broadened from evaluating physiological responses, including injury and …

Assessing the size of cetacean populations in the open ocean has traditionally relied on
visual surveys alone. The addition of acoustic monitoring can complement these surveys if …