Review Article

Anthropogenic Threats and Conservation Needs of Blue Whales, Balaenoptera musculus indica, around Sri Lanka

Figure 3

Map showing ship traffic frequency (red-blue), oil and gas exploration zone SL2007-01-01 which was the first to be explored in Sri Lankan waters in 2011 (gray box), pygmy blue whale sightings (black dots), and areas of relevance around Sri Lanka. Data sources include Potemra [59], National Aquatic Resources Research and Development Agency [60], Ballance and Pitman [61], de Vos et al. [19], and de Vos, unpublished data.