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Blacktip Photo ID

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On these pages the individual blacktip reefsharks have been identified. This helps to get an estimate of numbers and age, males and females and to keep track on the population of blacktip reefsharks around Phi Phi Islands.

At the moment (2025) 389 different individual sharks have been registered starting from January 1993. Of these 116 have been identified as males. 153 sharks are individuals seen more than 1 year, some of them 6-7 years in a row. One sharks "Mai" have been seen from 2006 as well as 2025, which is 19 years. There is evidens of mating in the month of July, as several of the females have fresh bite marks on their bodies, and I saw mating behaviour this year i July. From the photos it can be seen that even deep bite marks and bruises will heal completely. Look at "Noi"

Number of sharks registered by photo and log the different years:

1993	22
1996	3
1997	8
1998	17
2001	6
2003	10
2004	7
2005	12
2006	22
2007	21
2008	44
2009	36
2010	41
2011	68
2012	1
2013	75
2014	23
2015	46
2016	69
2017	45
2018	78
2019	102
2024	64

July 2024 64 different sharks were identified to PhotoID. 28 of the registered sharks were males. Very young sharks (40 cm) to adult pregnant females. 8 sharks are sharks known from previous years. The rest are new ones. Again Mai from 2006 were seen. I saw her first time 19 years ago. At least one shark was seen with hook in its mouth this year.

If you see sharks around Phi Phi and are lucky to get a photo please mail it with the following information:

Date:

Place (around Phi Phi Islands):

Estimated size of the shark:

Should the shark be observed more than one year it gets a name.

The following specimens have been recorded at Long Beach, Hin Phae and Phi Phi Leh:

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