The Coral Trait Database is a growing compilation of scleractinian coral life history trait, phylogenetic and biogeographic data. The database was initially a series of spreadsheet tables, but starting in 2013 this data is being transitioned into an online collaborative database with a growing number of contributors. As of August 2013, there were 78318 trait entries (observations) for 1555 coral species in the database. Most of these trait entries are for shallow-water, reef-building species. Data contributors have access control over the data they enter. Nonetheless, an increasing proportion of these data is publicly accessible.