Although humpback whale (Megaptera novaeangliae) calves are reported to vocalize, this has not been measurably verified. During March 2006, an underwater video camera and two-element hydrophone array were used to record nonsong vocalizations from a mother-calf escort off Hawaii. Acoustic data were analyzed; measured time delays between hydrophones provided bearings to 21 distinct vocalizations produced by the male calf. Signals were pulsed (71%), frequency modulated (19%), or amplitude modulated (10%). They were of simple structure, low frequency (mean=220 Hz), brief duration (mean=170 ms), and relatively narrow bandwidth (mean=2 kHz). The calf produced three series of "grunts" when approaching the diver. During winters of the years 2001-2005 in Hawaii, nonsong vocalizations were recorded in 109 (65%) of 169 groups with a calf using an underwater video and single (omnidirectional) hydrophone. Nonsong vocalizations were most common (34 of 39) in lone mother-calf pairs. A subsample from this dataset of 60 signals assessed to be vocalizations provided strong evidence that 10 male and 18 female calves vocalized based on statistical similarity to the 21 verified calf signals, proximity to an isolated calf (27 of 28 calves), strong signal-to-noise ratio, and/or bubble emissions coincident to sound.

The presence of endangered North Atlantic right whales Eubalaena glacialis in the mid-Atlantic region of the USA is not well understood. Adequate protection of right whales in the face of plans to develop offshore renewable energy requires more information about this species' distribution and occurrence in this region. We present findings from the first year-round study dedicated to marine mammals in New Jersey's nearshore waters using line transect surveys and passive acoustic monitoring. Four groups of right whales, including a cow−calf pair, were sighted. Right whales were detected acoustically during all seasons. Sightings of females and subsequent confirmations of these same individuals in the calving grounds a month or less later illustrate that these waters are part of this species' migratory corridor. Observations of skim-feeding behavior suggest that feeding may also occur in areas farther south than the main feeding grounds. Based on the year-round occurrence of right whales off New Jersey, we recommend that presumed seasonal migratory patterns not be used alone to determine the timing of construction activities or monitoring/mitigation efforts for offshore development. Our results also provide support for the expansion of existing critical habitat to include nearshore waters of the mid-Atlantic.

Numerous studies have quantified the impacts of tourism on marine mammals; however, few studies have investigated tour operators' procedures and their compliance with regulations and guidelines. This study quantifies operator compliance with NOAA guidelines, examines the structure of tour educational programs, and investigates dolphin behavior during encounters between tour vessels and bottlenose dolphins in Clearwater, Florida. During 45 encounters, operators adhered to the guidelines approximately 60% of the time. Operators complied with the viewing time limit but failed to end encounters when dolphins exhibited potential disturbance behaviors. Operators approached dolphins within the 50-yard distance limit and used inappropriate techniques to maneuver around dolphins. The educational programs were unstructured and lacked critical components of effective interpretation programs. Considering these findings, we make suggestions for ways to improve educational programs, increase compliance, and minimize the impacts of tour vessels on dolphins.

There has been very little research on marine mammals in Cuban waters. Much of the information on marine mammals in this region is buried in historical and gray literature. In order to provide a comprehensive account of marine mammal occurrence in Cuba's Exclusive Economic Zone (EEZ), we reviewed and verified 659 published and unpublished sighting, stranding, capture, and tagging records. Eighteen extant species and four genera have confirmed records for Cuban EEZ waters. This includes 17 species of cetaceans (three baleen whales and 14 toothed whales) and one sirenian species. An additional 11 cetacean species and one extant pinniped species have been reported, but not confirmed, or may have the potential to occur in Cuban waters. Historical records of the Caribbean monk seal (Monachus tropicalis) are documented in Cuba; however, this species is now considered extinct. The only two species that are seen regularly and considered common in Cuban nearshore waters are the common bottlenose dolphin (Tursiops truncatus) and the West Indian manatee (Trichechus manatus). Resumen:No hay mucha investigación sobre el tema de los mamíferos marinos en aguas cubanas. La mayoría de la información se encuentra enterrada en la literatura histórica y gris. A fin de proporcionar un informe completo de la presencia de mamíferos marinos en la Zona Económica Exclusiva (ZEE) de Cuba, hemos revisado y verificado 659 registros publicados y no publicados de avistamientos, varamientos, capturas y marcajes. Dieciocho especies existentes y cuatro géneros tienen registros confirmados para las aguas de la ZEE cubana. Esto incluye 17 especies de cetáceos (tres ballenas barbadas y 14 odontocetos) y una especie de sirenio. También se han reportado sin confirmar, o tienen el potencial de presentarse en aguas cubanas, 11 especies de cetáceos y una especie de pinnípedo. Existen registros históricos de la foca monje del Caribe (Monachus tropicalis) en Cuba, sin embargo esta especie se considera extinta. Las únicas dos especies que se ven regularmente y se consideran comunes en las aguas costeras de Cuba son el tursión (Tursiops truncatus) y el manatí antillano (Trichechus manatus). Ar t i c l e in f o Manuscript type IntroduccionMarine mammal occurrence is not well documented for Cuban waters. Although historical accounts are summarized in the older literature (e.g. Cuní, 1918; Aguayo, 1954), no recent comprehensive account of marine mammals of Cuba exists. Most records are based on historical accounts and gray literature; therefore, verification of records is often difficult. Very few surveys of marine mammals have been conducted in this region of the Caribbean Sea. Most of what is known about marine mammals in Cuban waters comes from stranding and/ or capture information from local fishermen. Although these types of records are useful for identifying species presence, they do not provide adequate information on species abundance and distribution which can be estimated from systematic surveys. Abundance information is particularly impor...

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