The time to enter the 2015 National Geographic Traveler Photo Contest is nearly up, and so far the showing is impressive.
Photos have been pouring in from across the globe since April, and these top aerial picks gathered by National Geographic are some of the most breathtaking examples.
The deadline for entry is June 30 - if your photos are up to the challenge, enter here. This year's contest is split into four categories: Outdoor Scenes, Spontaneous Moments, Sense of Place, and Travel Portraits.
The first place winner receives an eight-day expedition along the sunny coast of Panama and Costa Rica complete with instruction from a team of experts plus free airfare for two.
Winding irrigation canals cut through miles of tulip fields in Voorhout, the Netherlands. The country produces more than 3 billion tulip bulbs a year.
Rich concentrations of minerals give the water its vibrant coloring in the salt flats of Northern California.
Some describe this as the most dangerous wave in Australia, as it breaks on barnacle-encrusted rocks just feet from a stony cliff edge - despite being in downtown Sydney. Photographer Ian Bird captured a surfer from 300 feet directly above the wave in a helicopter.
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