Around 2,200 images were submitted last year from 75 countries and already the competition is proving fierce this year.
Photographer Tom Sullam, who set up the competition, said he hoped the photos would shine a light on wildlife conservation.
‘Conservation was always at the heart of the competition, along with the fact that people seemed to enjoy images of animals doing entertaining things!,’ he said.
‘But essentially living in a country that has some of the best wildlife in the world – Tanzania – and seeing how destructive human actions can be on this wildlife, made us want to do our little bit to help.
‘Raising awareness through photography, getting people involved and using humour as a positive reinforcement of the good things, rather than focusing on the negative imagery that has historically been used – which does have its place in the fight to raise awareness.’
Entrants are allowed to enter up to three images into each category and up to two video clips of no more than 60 seconds into the video clip category.