H. Carter Esch's research while affiliated with Woods Hole Oceanographic Institution and other places

... They have also been observed feeding by diving to greater depths (Baumgartner et al. , 2017. Foraging behavior of the northern right whale (NARW; E. glacialis) has been extensively studied both in their feeding grounds and in their calving areas (see, e.g., Watkins and Schevill 1976;Mayo and Marx 1990;Mate et al. 1997;Baumgartner et al. 2013;Kenney et al. 2020). In contrast, there is little information about the feeding behavior of SRW, either in their feeding grounds or in their calving grounds, where prey are relatively scarce. ...

... Emotional arousal is known to influence vocal signals through shifts in the production rate and structural characteristics of vocalisations [7,24,25], providing both voluntary and involuntary vocal cues of changes in internal emotional states [6]. When investigated across taxa, [6] identified several common rules regarding how the vocal behaviour of mammals changed in response to arousal state. ...

... They have been found to be the predominant whistle type emitted when bottlenose dolphins are isolated (Caldwell and Caldwell, 1965), serve as contact calls during intraspecific communication , and underwater contact maintenance when dispersed (Janik and Slater, 1998). Notably, signature whistles have been shown to carry both identity and context-related information to conspecifics (Sayigh et al., 1999;Sayigh et al., 2007;Sayigh et al., 2023). ...

... The frequency range of F p was compatible with that of other odontocete contact calls. The fundamental frequency of the signature whistles in bottlenose dolphins ranges from 1 to 30 kHz (Esch et al., 2009). The fundamental frequency or pitch of pulses ranged from 0.5 to 2 kHz and 5-9 kHz in the low-and highfrequency components, respectively, in the stereotyped calls produced by killer whales . ...

... Generally, balaenopterids produce a variety of lowfrequency tonal and broadband calls, with durations ranging from 1 to 60 s, fundamental frequencies between 10-1000 Hz, and high source levels from around 145 to over 190 dB re: lPa at 1 m (Richardson et al., 1995;Miller et al., 2021). Within their varied call repertoires, most balaenopterids produce some call types that are distinctive, stereotyped, and unique at the species or population level, including blue whales, B. musculus , fin whales, B. physalus (Hatch and Clark, 2004;Delarue et al., 2009;Castellote et al., 2012), humpback whales, Megaptera novaeangliae (Cerchio et al., 2001;Garland et al., 2011), minke whales, B. acutorostrata (Mellinger et al., 2000;Gedamke et al., 2001;Rankin and Barlow, 2005;Risch et al., 2014), sei whales, B. borealis (Rankin and Barlow, 2007;Baumgartner et al., 2008;Calderan et al., 2014), and the Bryde's-like whales, B. edeni, B. ricei, and a) Electronic mail: melissa.soldevilla@noaa.gov B. omurai (Oleson et al., 2003;Sirović et al., 2014;Cerchio et al., 2015), which are ideal for autonomous PAM surveys. ...