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Table 1 Survey effort (time duration, length), sighting location, sighting number and number of animals estimated in each sight between August and December 2014

From: First record of the Indo-Pacific humpback dolphins (Sousa chinensis) southwest of Hainan Island, China

Date Time duration (hrs) Length (km) Sighting location Sighting number Number of animals sighted
Longitude Latitude
10/08/2014 6.5 52 N/A N/A 0 0
11/08/2014 6 41 N/A N/A 0 0
14/08/2014 7.5 71 N/A N/A 0 0
16/08/2014 9 79 N/A N/A 0 0
21/09/2014 2 12 N/A N/A 0 0
22/09/2014 6 55 N/A N/A 0 0
24/09/2014 7.5 69 N/A N/A 0 0
26/09/2014 8.5 76 N/A N/A 0 0
27/09/2014 7 68 N/A N/A 0 0
19/10/2014 6 50 N/A N/A 0 0
20/10/2014 7.5 57 108°52.219′ 18°20.194′ 1 20–30
21/10/2014 7.5 55 108°55.772′ 18°19.198′ 1 30–40
23/10/2014 8 70 N/A N/A 0 0
11/11/2014 5 38 109°54.720′ 18°19.657′ 1 8
12/11/2014 6.5 60 N/A N/A 0 0
15/11/2014 7.5 50 N/A N/A 0 0
16/11/2014 6 38 108°56.919′ 18°21.956′ 1 15–20
13/12/2014 7 60 108°56.794′ 18°19.523′ 1 15–20
14/12/2014 6 44 N/A N/A 0 0
15/12/2014 8 72 N/A N/A 0 0
18/12/2014 6 56 N/A N/A 0 0
20/12/2014 6 45 108°54.170′ 18°19.339′ 1 12