Nuno Sa / Long snouted seahorse (Hippocampus guttulatus) in captive breeding laboratory at University of Algarve, Portugal. June 2010. Overall winner of the Underwater Photographer of the Year competition 2015.

Alex Mustard / Portrait of a Severn's pygmy seahorse (Hippocampus severnsi) at Mioskon Island, Raja Ampat, West Papua, Indonesia. Dampier Strait. Tropical West Pacific Ocean.

Alex Mustard / Close up of tiny (10mm) Pygmy seahorse (Hippocampus bargibanti) living disguised in Muricella sp. sea fan. Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Franco Banfi,Franco Banfi / Pygmy seahorse, not currently described hiding in sea fan, Raja Ampat, Irian Jaya, West Papua, Indonesia, Pacific Ocean

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

Alex Mustard / Portrait of a Yellow seahorse (Hippocampus guttulatus), Capo Galera, Alghero, Sardinia, Italy, Mediterranean Sea.

Dan Burton / Spiny / Yellow Seahorse (Hippocampus guttulatus). Studland Bay, Dorset, UK, September.

Alex Mustard / 2020VISION / Yellow / spiny seahorse (Hippocampus guttulatus) female sheltering is meadow of common Eelgrass (Zostera marina) Studland Bay, Dorset, UK, August. Did you know? The two species of seahorse found in Br...

Alex Mustard / 2020VISION / A captive Yellow / Spiny seahorse (Hippocampus guttulatus) attached to plastic seagrass, Weymouth Sealife Centre, Dorset, England, UK.

Juergen Freund / Pygmy seahorse (Hippocampus bargibanti) camouflaged in a fancoral. Misool, Raja Ampat, West Papua, Indonesia

Juergen Freund / Pygmy seahorse (Hippocampus bargibanti) camouflaged in a fancoral. Misool, Raja Ampat, West Papua, Indonesia

Juergen Freund / Denise's pygmy seahorse (Hippocampus denise) in its fan coral. Misool, Raja Ampat, West Papua, Indonesia