Friends of the Sea Otter
Friends of the Sea Otter
http://www.seaotters.org/
Otter Survival Fund
Wildlife charity helping the 13 species of otter worldwide
http://www.otter.org/
Stichting Otterstation Nederland
Stichting Otterstation Nederland
http://www.otter.to/
Stichting Vrienden v.d. otter
Stichting vrienden van de otter - vriendenvandeotter.nl
http://www.vriendenvandeotter.nl/