Fig. 4From: First aggregation of grey nurse sharks (Carcharias taurus) confirmed in Western AustraliaDecline (M1) and emergence (M3) of predominant male Carcharias taurus at the Point Murat Navy Pier, 2007–2011. Residence period was calculated as the number of days between when an individual shark was first sighted and last sighted each calendar year. M = male C. taurus Back to article page