Roberto Rinaldi / White margate (Haemulon album), Belize.

Alex Mustard / Bluestriped grunt (Haemulon sciurus) opening its mouth wide to attract the attention of cleaners, Grand Cayman, Cayman Islands, Caribbean Sea.

Alex Mustard / Bluestriped grunt (Haemulon sciurus) on left and White grunt (Haemulon plumierii) face to face with mouths open wide in territorial dispute, Grand Cayman, Cayman Islands, Caribbean Sea.

Lucas Bustamante / Golden-eye grunts (Haemulon scudderii) school swimming over reef, North Seymour Island, Galapagos National Park, Pacific Ocean.

Henley Spiers / Huge school of Spottail grunt (Haemulon maculicauda) swimming just beneath the sea surface with a Double-crested cormorant (Nannopterum auritum) diving through the air approaching its underwater prey,...

Pascal Kobeh / School of Sailors choice (Haemulon parra) and Bluestriped grunts (Haemulon sciurus), Caribbean sea, Yucatan peninsula, Mexico.

Henley Spiers / Double-crested cormorant (Nannopterum auritum) hunting school of Spottail grunt (Haemulon maculicauda). Espiritu Santo Island, Sea of Cortez, Mexico.

Henley Spiers / Large school of Spottail grunt (Haemulon maculicauda) surrounding a Mexican hogfish (Bodianus diplotaenia), Espiritu Santo Island, Sea of Cortez, Mexico.

David Fleetham / A group of White margate (Haemulon album) living in a shipwreck off Stuart Cove's Dive South Ocean, Nassau, Bahamas.

Pascal Kobeh / A school of Common grunts (Haemulon plumierii) with a few Bluestriped grunts (Haemulon sciurus) and a Blue tang surgeonfish (Acanthurus coeruleus) on the reef with particularly common seafans or gorgo...

Lynn M. Stone / Double-crested cormorant (Phalacrocorax auritus) feeding on Blue striped grunt (Haemulon sciurus) fish prey. Tampa Bay, Tierra Verde, Florida, USA, August.

Lynn M. Stone / Double-crested cormorant (Phalacrocorax auritus) feeding on Blue striped grunt (Haemulon sciurus) fish prey. Tampa Bay, Tierra Verde, Florida, USA, August.

Alex Mustard / Mixed school of Bluestriped grunts (Haemulon sciurus), French grunts (Haemulon flavolineatum) and Schoolmasters ( Lutjanus apodus) shelter in Elkhorn corals (Acropora palmata) growing in shallow water...

Shane Gross / French grunt (Haemulon flavolineatum) school in coral reef. The Bahamas.

Alex Mustard / Giant barrel sponge (Xestospongia muta) releases a smokey cloud of gametes as it spawns, watched by two white grunts (Haemulon plumieri). Jardines de la Reina, Gardens of the Queen National Park, Cuba...

Alex Mustard / School of bluestriped grunt (Haemulon sciurus), Schoolmaster snapper (Lutjanus apodus) and Porkfish (Anisotremus virginicus) sheltering beneath the branches of the critically endangered Elkhorn coral...

Alex Mustard / School of grunts (bluestriped grunt: Haemulon sciurus and white grunt: Haemulon plumieri) sheltering in sea plumes (Pseudopterogorgia sp.) and porous sea rods (Pseudoplexaura sp.) on a coral reef. Jar...

Claudio Contreras / White margate fish (Haemulon album) yawning, Guanahacabibes Peninsula National Park, Pinar del Rio Province, western Cuba.

Claudio Contreras / Schoolmaster snapper (Lutjanus apodus) and Bluestriped grunt (Haemulon sciurus) seeking protection in Elkhorn Coral (Acropora palmata), Jardines de la Reina / Gardens of the Queen National Park, Carib...

Claudio Contreras / Schoolmaster snapper (Lutjanus apodus) and Bluestriped grunt (Haemulon sciurus) amongst Red mangrove (Rhizophora mangle), Jardines de la Reina / Gardens of the Queen National Park, Caribbean Sea, Cieg...

Claudio Contreras / Gray / Grey snapper (Lutjanus griseus) and French grunt (Haemulon flavolineatum amongst Red mangrove (Rhizophora mangle) stilt, Jardines de la Reina / Gardens of the Queen National Park, Caribbean Sea...

Shane Gross / A school of Grunts (Haemulon chrysargyreum) among corals and sponges in a patch reef, Eleuthera, Bahamas.

Shane Gross / Smallmouth grunt (Haemulon chrysargyreum) fish swim over a coral reef, Cancun, Mexico. Slow shutter speed image.