Alex Mustard / A Pygmy Seahorse (Hippocampus bargibanti) in red seafan (Muricella sp.). Pygmy Seahorses are small, most less than 15mm in total length. Tulamben, Bali, Indonesia, Java Sea, August.

Alex Mustard / A Pygmy Seahorse (Hippocampus bargibanti) camouflaged in red Seafan (Muricella sp.). Pygmy Seahorses are small, most less than 15mm in length. Tulamben, Bali, Indonesia, October.

Alex Mustard / A Pygmy Seahorse (Hippocampus bargibanti) camouflaged in red Seafan (Muricella sp.). Pygmy Seahorses are small, most less than 15mm in length. Tulamben, Bali, Indonesia, October.

Alex Mustard / Two Denise's Pygmy Seahorses (Hippocampus denise) on a seafan (Muricella sp.). Digital composite. Misool, Raja Ampat, West Papua, Indonesia, November.

Juergen Freund / Pygmy seahorse (Hippocampus bargibanti) camouflaged on coral (Muricela sp). Lembeh Strait, North Sulawesi, Indonesia

Jeff Rotman / Thorny Sea Horses (Hippocampus histrix) on Alcyonarian coral (Dendronephthya sp.). Israel, Red Sea.

Birgitte Wilms / Seahorse (Hippocampus sp) holding on to a Crinoid, Papua, Papua New Guinea

Fred Bavendam / Pygmy Seahorse (Hippocampus bargibanti) clinging to a Gorgonian Coral Fan, Lembeh Straits, Sulawesi, Indonesia

Fred Bavendam / Long-snouted Seahorse (Hippocampus reidi) portrait, Bonaire, Netherland Antilles

Norbert Wu / Spotted Seahorse (Hippocampus erectus) male who has just given birth to babies, surrounded by his offspring

Fred Bavendam / Pygmy Seahorse (Hippocampus bargibanti) clinging to a Gorgonian Coral Fan, Lembeh Straits, Sulawesi, Indonesia

Jeff Rotman / Thorny seahorse (Hippocampus Histrix) on Alcyonarian coral (Dendronephthya sp) Eilat, Israel, Red Sea

Chris Newbert / Pygmy Seahorse (Hippocampus bargibanti) pair on coral, Indonesia

Birgitte Wilms / Seahorse (Hippocampus sp) male on coral, Solomon Islands

Juergen Freund / Yellow seahorse (Hippocampus sp) North Raja Ampat, West Papua, Indonesia.

Juergen Freund / Pygmy seahorse (Hippocampus bargibanti) camouflaged on coral (Muricela sp). Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Pygmy seahorse (Hippocampus bargibanti) well camouflaged on a Fan coral (Muricela sp). Lembeh Strait, North Sulawesi, Indonesia.

Alex Mustard / A digital composite of a Pygmy Seahorse (Hippocampus bargibanti) swimming over a seafan (Muricella sp.). Pygmy seahorses are small, most less than 15mm in total length. Lembeh Strait, Sulawesi, Indone...

Hiroya Minakuchi / Pygmy Seahorse (Hippocampus bargibanti) camouflaged on coral, Borneo, Malaysia

Tim Laman / An unnamed species of Pygmy Seahorse (Hippocampus sp.) Vicinity of Gam Island, West Papua, Indonesia, May 2007

Konrad Wothe / Seahorse (Hippocampus sp)

Fred Bavendam / Pacific Seahorse (Hippocampus ingens), Galapagos Islands, Ecuador

Fred Bavendam / Red Spiny Seahorse (Hippocampus moluccensis) male clinging to seaweed, Lembeh Strait, Indonesia

Fred Bavendam / Tiger-tail Seahorse (Hippocampus comes), Andaman Sea, Thailand

Fred Bavendam / Yellow Sea Horse (Hippocampus kuda) near tunicates, Lembeh Strait, Indonesia

Fred Bavendam / Yellow Sea Horse (Hippocampus kuda) camouflaged against coral, Lembeh Strait, Indonesia

Fred Bavendam / Big-bellied Seahorse (Hippocampus abdominalis) clinging to seaweed, Tasman Peninsula, Australia

Fred Bavendam / Big-bellied Seahorse (Hippocampus abdominalis) clinging to seaweed, Tasman Peninsula, Australia

Fred Bavendam / Short-snouted Seahorse (Hippocampus breviceps), Edithburgh, Australia

Fred Bavendam / Long-snouted Seahorse (Hippocampus reidi), Bonaire, Caribbean

Juergen Freund / Yellow pygmy seahorse {Hippocampus sp} camouflaged amongst coral, Indo-pacific

Fred Bavendam / Thorny Seahorse (Hippocampus histrix), Ambon, Indonesia

Fred Bavendam / Pygmy Seahorse (Hippocampus bargibanti) camouflaged in coral, Lembeh Strait, Indonesia

Chris Newbert / Thorny Seahorse (Hippocampus histrix) and Feather Duster Worm (Sabellastarte indica), Indonesia

Chris Newbert / Thorny Seahorse (Hippocampus histrix), Indonesia

Chris Newbert / Thorny Seahorse (Hippocampus histrix), Indonesia

Chris Newbert / Pygmy Seahorse (Hippocampus bargibanti) clinging to Sea Fan (Muricella sp), Indonesia

Chris Newbert / Seahorse (Hippocampus sp) holding on to support with tail, Indonesia

Albert Lleal / Short-snouted Seahorse (Hippocampus hippocampus), juvenile

Birgitte Wilms / Seahorse (Hippocampus sp) holding on to Sea Pen (Virgularia sp) 90 feet deep, Indonesia

Birgitte Wilms / Seahorse (Hippocampus sp) holding on to Sea Pen (Virgularia sp) 90 feet deep, Indonesia

Chris Newbert / Seahorse (Hippocampus sp) 50 feet deep, Papua New Guinea

Chris Newbert / Seahorse (Hippocampus sp) 60 feet deep, Papua New Guinea

Chris Newbert / Seahorse (Hippocampus sp) on Sea Fan (Muricella sp) 80 feet deep, Solomon Islands

Fred Bavendam / Short-snouted Seahorse (Hippocampus breviceps) hiding among clump of colonial Ascidians (Podoclavella sp), Australia

George Chan / Dried seahorses {Hippocampus sp} Handumon Island, Philippines

GEORGETTE DOUWMA / Seahorse (Hippocampus sp) Lembeh Strait, North Sulawesi, Indonesia

Doug Perrine / Longsnout seahorse {Hippocampus reidi} in Finger coral {Porites sp} Caribbean

Birgitte Wilms / Seahorse (Hippocampus sp) on Soft Coral (Dendronephthya sp), Papua New Guinea

Birgitte Wilms / Seahorse (Hippocampus sp) portrait, Papua New Guinea

Chris Newbert / Seahorse (Hippocampus sp) juvenile clinging to seaweed, Papua New Guinea

Fred Bavendam / Pygmy Seahorse (Hippocampus bargibanti) pair camouflaged against Gorgonian Sea Fan, smallest species of seahorse, Manado, Indonesia

Chris Newbert / Seahorse (Hippocampus sp) holding onto reef wall, 60 feet deep, Galapagos Islands, Ecuador

Chris Newbert / Seahorse (Hippocampus sp) holding on to Sea Fan (Echinogorgia sp) 60 feet deep, Galapagos Islands, Ecuador

Birgitte Wilms / Seahorse (Hippocampus sp) on Sea Fan (Melithaea sp) 40 feet deep, Solomon Islands

Chris Newbert / Seahorse (Hippocampus sp) pregnant male on Sea Fan (Melithaea sp) 50 feet deep, Solomon Islands

Birgitte Wilms / Seahorse (Hippocampus sp) pregnant male on Sea Fan (Muricella sp) 80 feet deep, Solomon Islands

Chris Newbert / Yellow Sea Horse (Hippocampus kuda) portrait, underwater, Kona, Hawaii

Chris Newbert / Seahorse (Hippocampus sp) hiding in Algae (Halimeda sp) 20 feet deep, Papua New Guinea

Norbert Wu / Seahorse (Hippocampus sp) on Sea Fan, related to Pipefish, Papua New Guinea

Norbert Wu / Pacific Seahorse (Hippocampus ingens) a master of camouflage, Galapagos Islands, Ecuador

Chris Newbert / Seahorse (Hippocampus sp) 30 feet deep, Papua New Guinea

Chris Newbert / Seahorse (Hippocampus sp) pregnant male on Sea Fan (Muricella sp) 80 feet deep, Solomon Islands

Birgitte Wilms / Seahorse (Hippocampus sp) on Sea Fan (Muricella sp) 80 feet deep, Solomon Islands

Fred Bavendam / Thorny Seahorse (Hippocampus histrix) male whose brood pouch is swollen with developing eggs, Lembeh Strait, Indonesia

Fred Bavendam / Thorny Seahorse (Hippocampus histrix) clinging to branch of a sponge, Lembeh Strait, Indonesia

Fred Bavendam / Short-snouted Seahorse (Hippocampus breviceps) with two parasitic isopods clinging to its head, Edithburgh, South Australia, Australia

Fred Bavendam / Thorny Seahorse (Hippocampus histrix) male whose brood pouch is swollen with developing eggs, Lembeh Strait, Indonesia

Fred Bavendam / Thorny Seahorse (Hippocampus histrix) portrait, Lembeh Strait, Indonesia

Flip Nicklin / Seahorse (Hippocampus sp) on coral, North America

Flip Nicklin / Seahorse (Hippocampus sp) portrait

Norbert Wu / Tiger-tail Seahorse (Hippocampus comes) pair mating, male broods eggs and gives birth

Fred Bavendam / Seahorse (Hippocampus sp) next to corals, Andaman Sea, Thailand

Birgitte Wilms / Seahorse (Hippocampus sp) tail, Indonesia

Birgitte Wilms / Seahorse (Hippocampus sp), Papua New Guinea

Birgitte Wilms / Seahorse (Hippocampus sp), Papua New Guinea

Birgitte Wilms / Seahorse (Hippocampus sp), Papua New Guinea