• Glass eels (Anguilla anguilla) have a magnetic compass linked to the tidal cycle 

      Cresci, Alessandro; Paris, Claire B.; Durif, Caroline; Shema, Steven; Bjelland, Reidun Marie; Skiftesvik, Anne Berit; Browman, Howard (Journal article; Peer reviewed, 2017)
      The European eel (Anguilla anguilla) has one of the longest migrations in the animal kingdom. It crosses the Atlantic Ocean twice during its life history, migrating between the spawning area in the Sargasso Sea and Europe, ...