The Key to Nature Program, an initiative of 14 different European organizations, is dedicated to helping students learn about biodiversity and identify different species. This program hosts the Marine Species Identification Portal, an extensive collection of diagrams, photographs, and descriptions of hundreds of marine species. On the landing page, visitors can explore these species alphabetically or by category (e.g. Crustaceans, Hydrozoans, or Sponges). Visitors also have the option to search for a specific species of interest. Visitors may also view common species by global region via the Identify tab, or test their identification skills with an interactive Quiz. The multiple choice quiz is available in three different difficulty levels and offers a great learning tool for biology students or anyone looking to sharpen their knowledge of different marine species.