You can search either specimens from a group of islands or from a specific island or both. If you use the dropdown menus please make sure that your search parameters include a logical combination. For example, the Island Group "Santa Cruz" includes several smaller islands such as "Isla Baltra", "Isla Daphne Mayor", "Isla Daphne Menor", etc. Thus, the combination of Island Group "Santa Cruz" and Island Name "Isla Pinzon" will not yield any results.
If you are not sure which Island Group a particular island belongs to or how a particular island is named, best select "not specified" and then enter a partial match in the free text box provided.