About: http://webisa.webdatacommons.org/290634358

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Reply eswviva says: March 22, 2012 at 17:06 It appears during degassing, but only when the sea is mostly calm and the sun is just right.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com