Constantinos Petrinos / Blue triggerfish {Pseudobalistes fuscus} with Cleaner fish Red Sea

Georgette Douwma / Blue triggerfish (Pseudobalistes fuscus) Egypt, Red Sea

Georgette Douwma / Blue triggerfish (Pseudobalistes fuscus) watching a Bluespotted ribbontail ray (Taeniura lymna) digging in sandy bottom for food. Egypt, Red Sea.

Alex Mustard / Caribbean reef shark (Carcharhinus perezii) with a pair of bar jacks (Caranx ruber) cruises through a school of black durgon (Melichthys niger) above a coral reef, East End, Grand Cayman, Cayman Isla...

Jeff Rotman / Tail of Clown triggerfish (Balistoides conspicillum) Great Barrier Reef, Australia

Juergen Freund / Yellowmargin triggerfish (Pseudobalistes flavimarginatus) with a shell in its mouth, Bali, Indonesia.

Georgette Douwma / Juvenile Blue triggerfish (Pseudobalistes fuscus) Rinca, Komodo National Park, Indonesia, October

GEORGETTE DOUWMA / Blue triggerfish (Pseudobalistes fuscus) lying on the sand, Egypt, Red Sea

GEORGETTE DOUWMA / Blue triggerfish (Pseudobalistes fuscus) lying on the seabed. Egypt, Red Sea.

Jeff Rotman / Close up of the eye of a Picasso Triggerfish (Rhinecanthus assasi) Red Sea, Egypt

Fred Bavendam / Titan Triggerfish (Balistoides viridescens) female blowing on her eggs to aerate them, Bali, Indonesia

Fred Bavendam / Titan Triggerfish (Balistoides viridescens) male attacking the fin of a diver who has come to close to its nest, Bali, Indonesia

Fred Bavendam / Titan Triggerfish (Balistoides viridescens) aerating clutch of eggs, Bali, Indonesia

Fred Bavendam / Titan Triggerfish (Balistoides viridescens) with spines from a sea urchin it has eaten, Bali, Indonesia

GEORGETTE DOUWMA / Redtoothed triggerfish (Odonus niger) guarding its eggs, Bali, Indonesia

Graham Eaton / Blue Triggerfish (Pseudobalistes fuscus) feeding in sand, Red Sea, Egypt, July

GEORGETTE DOUWMA / Titan / Moustache triggerfish (Balistoides viridescens) breaking up Blue coral (Heliopora coerulea). Blue coral is a member of the subclass Octocorall and is a living fossil. Andaman Sea, Thailand

GEORGETTE DOUWMA / Redtoothed triggerfish (Odonus niger). Bali, Indonesia.

GEORGETTE DOUWMA / Redtoothed triggerfish (Odonus niger) with Cleaner wrasse (Labroides dimidiatus). Bali, Indonesia.

GEORGETTE DOUWMA / Blue triggerfish (Pseudobalistes fuscus) blows sand to search for food. Red Sea, Egypt

GEORGETTE DOUWMA / Blue triggerfish (Pseudobalistes fuscus) searching for food on coral reef, Red Sea, Egypt

Chris Newbert / Blue Triggerfish (Pseudobalistes fuscus) 60 feet deep, Papua New Guinea

Doug Perrine / Shoal of Queen triggerfish {Balistes vetula} Belize, Caribbean

Chris Newbert / Triggerfish, fin detail, Red Sea, Egypt

Fred Bavendam / Titan Triggerfish (Balistoides viridescens) attacking a Long Spine Sea Urchin (Diadema setosum) it has dislodged from between rocks, Bali, Indonesia

Peter Scoones / Blue triggerfish {Pseudobalistes fuscus} blowing sea urchin to turn it over. Red Sea

Constantinos Petrinos / Blue triggerfish {Pseudobalistes fuscus} Red Sea

GEORGETTE DOUWMA / Blue triggerfish {Pseudobalistes fuscus} Red Sea

Jeff Rotman / Surgeonfish and Triggerfish silhouetted in sea surge Cocos Is, Pacific Ocean off Costa Rica

Hiroya Minakuchi / Scarlet Cleaner Shrimp (Lysmata amboinensis) cleaning Titan Triggerfish (Balistoides viridescens)