Photographer Greg Fleurentin won a gold medal for this image of sharks and a ray in French Polynesia's Moorea Lagoon.
The medal was awarded in the "Over/Under shots" category, which involves photos that cross the surface boundary of the water. The following two photos were part of the same category.
A turtle enjoys a nighttime swim in the Adriatic sea near Italy's coast in this image by Marco Caraceni.
Photographer Henley Spiers took home the top two prizes in the the "Natural Light" category. This image of a southern stingray swimming in the Cayman Islands won gold.
The natural light category awards photos taken using only ambient light.
This shot of a Hawksbill turtle in a shallow lagoon off the Maldives earned Spiers the silver medal.
Photographer Jinggong Zhang snapped this photo of seahorses mating in Japan.
The image took the gold medal in the "Not Swimming" category, which includes photos of "smaller subjects typically 1 to 3 inches" in size that are not moving. The following three images were submitted in this category as well.
John Roach captured a close-up image of a Yellowhead Jawfish in the Caribbean waters of the Netherlands Antilles.
This intimate portrait of a Porcelain crab in the Banda sea off of Indonesia came from photographer Iyad Suleyman.
This image by Deniz Muzaffer Gökmen might look almost abstract at first, but it shows a silhouetted seahorse in the Andaman sea off Indonesia.
This image of a jellyfish undulating through the water in the Philippines, taken by Wayne Jones, earned a gold medal.
It won the "Swimming" category, while the next photo came in second.
An open-mouthed Ribbon eel in Indonesia, photographed by Rudy Janessen, boasts remarkably bright coloring.
Photographer Daniel Flormann won the "Marine Life" category with this shot of a crocodile's reflection in the Gulf of Mexico, near Cuba.
The following four photos were part of the same category.
Australian photographer Nick Polanszky captured this manta ray as it swam through the Sea of Cortés near Mexico.
A Wakatobi cuttlefish stands out amid the other sea life in Indonesia's Banda sea in this image by Steven Miller.
The "Shark" category is always a fan favorite. Photographer Steve Andersen took home gold with this shot of a great white swimming near Guadalupe, Mexico.
The silver medal for shark photography went to Debbie Wallace, who took this picture of a female great Atlantic hammerhead shark from below in the Bahamas.
The contest isn't just about animals. Mehmet Öztabak won the "Wrecks" category with this photo of a diver exploring the Pinar 1 shipwreck in Bodrum, Turkey.
The "Wrecks" category includes photos of anything man-made that's sunk to the depths, like cars, tanks, planes, and ships. The following two images were in the same category.
