The Billfish Angler Survey provides estimates of billfish angling activities in the Pacific and Indian Oceans. This collection of recreational billfish catch and effort has occurred annually since 1969 and provides an index of fishing success in many Pacific billfish destinations. Catch per unit of effort (CPUE) is measured in catch of billfish per angler fishing day. This measure of angler success, tracked over time, can indicate changes in stock size caused by over fishing, changing environmental conditions, or local economic and political events. Only a small proportion of the data are from anglers in the Indian Ocean.