SCOTLAND: The Big Picture / Veterinarian from The Royal Zoological Society Scotland / RZSS using a catheter to collect semen for genetic testing from a sedated Scottish wildcat (Felis silvestris grampia). Inside RZSS mobile vet...

Tony Wu / Male Pfeiffer's top shell (Tegula pfeifferi) broadcast spawning by dribbling sperm into water little by little. East China Sea, Kagoshima Prefecture, Japan.

Tony Wu / Leaf coral (Pavona decussata) spawning, with streams of sperm sent into water column in synchrony with gametes from other nearby colonies of hard coral. East China Sea, Kagoshima Prefecture, Japan.

Tony Wu / Leaf coral (Pavona decussata) spawning, with streams of sperm sent into water column in synchrony with gametes from other nearby colonies of hard coral. East China Sea, Kagoshima Prefecture, Japan.

Tony Wu / Colony of Lobed cactus coral (Lobophyllia hemprichii) spawning by releasing both eggs and sperm at same time. East China Sea, Kagoshima Prefecture, Japan.

Tony Wu / Female Cushion star (Culcita novaeguineae) spawning by climbing to top of reef to release eggs visible as cloud of tiny white dots. East China Sea, Kagoshima Prefecture, Japan.

Tony Wu / Male Leopard sea cucumber (Bohadschia argus) broadcast spawning by raising itself above substrate and sending streams of sperm into water. East China Sea, Kagoshima Prefecture, Japan.

Tony Wu / Bivalve molluscs (Bivalvia) of indeterminate species broadcast spawning by releasing orange eggs and clouds of sperm. East China Sea, Kagoshima Prefecture, Japan.

Tony Wu / Male Intermediate sea urchins (Strongylocentrotus intermedius) commencing the spawning process by emitting sperm into the water, Hokkaido, Japan, Pacific Ocean.

Tony Wu / Male Leach's sea star (Leiaster leachi) broadcast spawning, releasing streams of sperm from its arms. Kagoshima Prefecture, Kyushu, Japan.

Tony Wu / Close up view of male Leach's sea star (Leiaster leachi) broadcast spawning, releasing streams of sperm from one of its arms. Kagoshima Prefecture, Kyushu, Japan.

Tony Wu / Male Leach's sea star (Leiaster leachi) broadcast spawning, releasing streams of sperm from its arms. Kagoshima Prefecture, Kyushu, Japan.