Figure 4: Global Distribution of Strontium Levels in Male Sperm Whales. This figure shows the global distribution of mean Sr levels in 105 male sperm whales grouped by sampling region. 1No male whales were found in the Cocos or Kiribati regions; 2Specific regions are named for the nearest body or ocean region; 3All data are presented in ug total Sr/g tissue wet weight +/- standard error. Regions that differed for males (p < 0.05): Canary Islands with Sea of Cortez; and Papua New Guinea with Sea of Cortez and Seychelles.