Global Biodiversity Information Facility (GBIF)

"free and open access to biodiversity data"

GBIF is a global organisation working for open science with biodiversity data. It seeks to make it easy for data gatherers, technical infrastructure providers and data consumers to participate in open science. There are over 300,000,000 occurances available to researchers.

Upon agreeing to a usage agreement discussing attribution, users are directed to a search screen that provides an interactive map with links to the tens of thousands of datasets.