The objectives of this project are three-fold:

• Firstly, to collect and collate the experimental data necessary to evaluate the potential impacts of altered gamete, fertilisation, embryonic development, hatching and larvae ecology from projected increases in ocean acidity in the Pacific Ocean for yellowfin tuna.

• Secondly, to utilize the experimental data to parameterise the SEAPODYM model to evaluate the impact of projected ocean acidification (and warming) upon the distribution and abundance of yellowfin tuna.

• Thirdly, provide information on the potential impacts of ocean acidification upon tuna stocks, in particular yellowfin tuna, to RFMOs for consideration in management decision making processes.