Region²

N³

Minimum⁴

Maximum

Mean

Standard Error

Sea of Cortez

25

1.1

8.8

3.4

0.3

Galapagos

7

1.1

11.5

3.8

1.4

Pacific Crossing

22

0.8

8.9

2.7

0.4

Kiribati

1

2.2

2.2

2.2

-

Papua New Guinea

23

0.6

7.8

1.9

0.3

Australia

16

0.7

6.6

2.5

0.5

Cocos

18

0.2

3.6

1.6

0.2

Indian Ocean Crossing

4

1.0

1.7

1.3

0.1

Chagos

12

0.7

3.4

1.5

0.2

Seychelles

36

0.7

9.1

3.1

0.4

Maldives

35

0.8

7.7

2.5

0.3

Sri Lanka

24

0.6

3.7

1.3

0.2

Mauritius

29

0.5

4.2

1.5

0.2

Mediterranean

23

0.5

9.2

2.1

0.4

Canary Islands

23

0.5

2.0

1.1

0.1

¹193 adult female sperm whales and 105 male sperm whales were sampled, ²Specific regions are named for the nearest land body or ocean region; ³All whales had detectable levels; ⁴All data are presented in ug total Sr/g tissue wet weight. Regions that differ: Sea of Cortez with Chagos, Cocos, Mauritius, Mediterranean, Papua New Guinea, Canary Islands and Sri Lanka; Canary Islands with Galapagos, Maldives, Pacific Crossing, Sea of Cortez and Seychelles; and Seychelles with Sri Lanka, Sea of Cortez and Canary Islands.