Marine Mammals and Seabirds and Turtles: Winter sightings per unit effort of porpoises from Western English Channel Marinelife Surveys

Marinelife sightings per unit effort (SPUE) of live porpoises in the Western English Channel. Surveys recorded sightings of Phocoena phocoena. The data span from 2007 - 2011 and come from both dedicated and opportunistic surveys in the CHARM3 study area. Relative-abundance of porpoises should be viewed with survey effort layers.