FOTONATURA - Stock Agency representing Marijn’s photographic work

Grasduinen - Monthly magazine on nature, hiking and nature photography

Sunrise and Sunset - Time tables for the Netherlands

Ontdek Afrika magazine - Quarterly magazine on all aspects of Africa

Wild@Work - Affordable framed prints from first class Dutch nature photographers, non-profit

Naturephotographers.net - Forum on nature photography, English language

Naturescapes.net - Forum on nature photography, English language

Birdphotographers.net - Forum on nature photography, English language

Travelphotographers.net - Forum on travel photography, English language

Strobist Community - Learning community, all about the use of small strobes, English language