Northernmost Record of the Galapagos Sea Lion (Zalophus wollebaeki): Sightings Along the Mexican Central Pacific and the Gulf of California During La Niña Conditions

Most organisms within the trophic web are affected by significant fluctuations in sea surface temperature (SST)—from phytoplankton (Fischer et al., 2020) to top predators such as pinnipeds (Elorriaga-Verplancken et al., 2016; Páez-Rosas et al., 2018; Gálvez et al., 2020). The global dis-tribution of these marine carnivores depends on SST because of its effects on the input of nutri-ents, primary productivity, and subsequent prey availability (Guinet et al., 2001; McClatchie et al., 2016; Adame et al., 2020).