Figure 2.7: Combined first sightings from May-August (2006-2009) as shown by using a minimum convex polygon. The colored stars represented the average sighting location for all sightings during each year, 2006 sightings in red, 2007 in yellow, 2008 in green, and 2009 in purple. The value represents water depth in meters. (Bathymetry map: NOAA 2013