
A study by Teoh et al (2013) estimated a population of 31 Irawaddy Dolphins living in Cowie Bay in 2010. Map below from a study by Norhashim and Jaaman (2011).
Teoh et al (2013) Population size of Irawaddy Dolphin in Cowie Bay
Norhashim & Jaaman (2011) Humpback Dolphin and Irawaddy Dolphins in Cowie Bay