Georgette Douwma / Thornback cowfish (Lactoria fornasini). Lembeh Strait, North Sulawesi, Indonesia.

David Fleetham / Smooth trunkfish (Lactophrys triqueter), portrait. Bonaire, Dutch Caribbean.

Chris Newbert / Cowfish (Lactoria diaphanus) juvenile pelagic stage, night, Kona, Hawaii

Georgette Douwma / Yellow boxfish (Ostracion cubicus). North Sulawesi, Indonesia.

Georgette Douwma / Yellow boxfish (Ostracion cubicus). North Sulawesi, Indonesia.

David Fleetham / Trumpetfish (Aulostomus maculatus) swimming behind Yellow boxfish (Ostracion cubicus) as a blind to ambush prey. Yap, Micronesia.

David Fleetham / Spotted boxfish (Ostracion meleagris) swimming above sea floor. Hawaii.

Gary Bell/ Oceanwide / Striped Cowfish (Aracana aurita) male, Tasmania, Australia

Tim Fitzharris / Butterflyfish (Chaetodon sp) group and male Horned Boxfish (Lactoria cornuta), Coral Coast, Australia

Magnus Lundgren / Wild Wonders of China / Yellow boxfish (Ostracion cubicus) Sai Kung East Country Oark, Hong Kong, China.

Richard Robinson / Spotted Boxfish (Ostracion meleagris) Namuka-i-Lau Island lagoon, Lau Island Group, Fiji. August, 2017

Linda Pitkin / Yellow boxfish (Ostracion cubicus), male, on coral reef, Beacon Rock reef, Strait of Gubal, Gulf of Suez, Egypt, Red Sea.