6. Schools of Schools, by Debbie Wallace: Second Place, Mirrorless Behavior
A swarm of fish, also known as a bait ball, surround a large female sand tiger shark as she moves towards the shipwreck in Caribsea, located off Morehead City in North Carolina
7. Bubble Life, by Owen Yen: Second Place, Mirrorless Macro
This photograph encapsulates a green nudibranch (also known as a sea slug, a shell-less marine mollusk), which ate the chlorophyll and stayed inside this bubble of Boergesenia forbesii (Siphonocladales), a type of green algae, in the Philippines.
8. Polycera quadrilineata Posing, by Fredrik Ehrenström: Second Place, Nudibranch
This photograph was taken in an algal belt around an old ferry dock in Bremsnes of Norway. It depicts a uniquely colored adult nudibranch raising its body, a behavioral trait that has been hypothesized to be related to mating.
9. Love From a Father, by François Baelen: Third Place, Marine Life Behavior
In this picture, a father clownfish, in Padangbai, Bali, protects his young and helps the eggs breathe using his fins. He carefully removes debris, dust and dead eggs from the nest to help ensure the survival of the next generation.
10. No No!, by Pier Mane: Third Place, Mirrorless Wide Angle
This photographer and his team dove into the waters of the Galapagos Islands in search of the mola mola, that is, the ocean sunfish. Instead, they found some playful sea lions, among which was this one, who seemed reluctant to have his photo taken, but posed for a moment nonetheless.