Sudstrand (southern beach) on Düne at navigational sign, Sandwattwurmburrows (Arenicola tubes), Helgoland, Germany. Intertidal pool, fine clean sand. Sample 11.
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith