Pascal Kobeh / Planehead / Common filefish (Stephanolepis hispidus), Canary Islands.

Tony Wu / Threadsail filefish (Stephanolepis cirrhifer) at night. Toyama Prefecture, Honshu, Japan. March.

Tony Wu / Threadsail filefish (Stephanolepis cirrhifer) two latched on to rope twhile resting, Toyama Prefecture, Honshu, Japan. March.

Hiroya Minakuchi / Threadsail Filefish (Stephanolepis cirrhifer) cleaning Ocean Sunfish (Mola mola), Azores, Portugal

Hiroya Minakuchi / Threadsail Filefish (Stephanolepis cirrhifer) cleaning Ocean Sunfish (Mola mola), Azores, Portugal

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) pair, Bahamas, Caribbean Sea

Sergio Hanquet / Planehead filfish (Stephanolepis hispidus) hunting in a sea meadow (Cymodosea nodosa), Tenerife, Canary Islands.

Shane Gross / A Planehead filefish (Stephanolepis hispidus) takes shelter in a matt of sargassum in the Sargasso Sea, Atlantic Ocean, International Waters.