The 2016 National Geographic Nature Photographer of the Year contest has kicked off. Organisers are accepting entries in one or all of four categories: Landscape, Environmental Issues, Action and Animal Portraits. The grand-prize winner will receive a 10-day trip for two to the Galápagos.

IBTimes UK presents a small selection of the entries received so far. You can see more – and enter your own photos – at the competition website.