Map of Puget Sound.

<p>The location of the Seattle Aquarium is marked with a red star.</p

Mark-resight model parameter estimates, and 95% lower (LCL) and upper (UCL) confidence levels for abundance parameters for 10 primary sessions.

<p>Note: Include PD = includes all orphaned sides noted in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0087081#pone.0087081.s001" target="_blank">Table S1</a> including R-PD and L-PD. Exclude PD means includes only R and L orphaned sides that are not PD.</p

Number of sharks observed at Seattle Aquarium by research date.

<p>Note: These numbers exclude potential duplicate sharks (See <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0087081#pone.0087081.s001" target="_blank">Table S1</a>). N = total number of recognizable individual sharks per event. Untagged = number of untagged sharks identified. New Tags = number of sharks tagged during a research day. Returns: number of sharks that were seen with tags placed on an earlier date. N of tags at liberty: the number of previously tagged sharks at liberty which can return. Season = L = low season (November-March) and H = high season (April-September).</p