609 in 2015 and later

648 past in 2015 (updated 17-07-'15)

Sources

Netherlands Open Water Web

marathonswimmers.org

Swimvortex

Zwemkroniek Nieuws

Noticias de la Real Federación Española de Natación

KNZB (The Netherlands)

USA Swimming

Wild Swimming

AquaSphere

Australian Swimming Federation

East Dorset Open Water Swimming club

ElDepornauta

FFN (France)

FreshwaterSwimmer

Insweep

Loneswimmer

Marathonswim.Greece

Musings of an aquatic ape

Nadandolibre los Mejores del Mundo

New York Times Swimming

New Zealand Herald Swimnews

Oceanswims blogspot

owsalicante

Penny & Chris Palfrey

Perunmondosenzabarriere.blogspot.com

RobAquatics

Swimming Canada

SwimmingWorldMagazine

SwimNews

SwimNews-France

thelongswim.Karen Throsby

Travessias

Utah Open Water Swimming

Yuzmeplus

Zwemza

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