About: http://webisa.webdatacommons.org/345837908

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	I think under some conditions, especially in a pool or in crystal clear water, it might be OK. Another reason for daylight, is that like most consumer cameras the image gets noisy when illumination drops.
http://www.w3.org/ns/prov#wasQuotedFrom	dpreview.com