Published on 11. September 2018 Using tagging data and aerial surveys to incorporate availability bias in the abundance estimation of blue sharks (Prionace glauca) Milaja Nykänen , Mark Jessopp, Thomas K. Doyle, Luke A. Harman, Ana Cañadas, Patricia Breen, William Hunt, Mick Mackey, Oliver Ó Cadhla, David Reid, Emer Rogan ABSTRACT: There is worldwide concern