Norbert Wu / Atlantic Bluefin Tuna (Thunnus thynnus) diver filming a school that has swum into the fishing nets of a 1,200 year-old fishery in Sardinia, Italy

Magnus Lundgren / Wild Wonders of China / Transpond reader (receiver) used to find the juvenile Chinese horseshoe crabs (Tachypleus tridentatus) before the release. Ha Pak Nai, Yuen Long District, Hong Kong, China.

Magnus Lundgren / Wild Wonders of China / Small transponder (sender) injected into the juvenile Chinese horseshoe crab (Tachypleus tridentatus) before the release. Ha Pak Nai, Yuen Long, Hong Kong, China

Magnus Lundgren / Wild Wonders of China / A small transponder (sender) injected into the juvenile Chinese horseshoe crab (Tachypleus tridentatus) before the release. Ha Pak Nai, Yuen Long District, Hong Kong, China.

Magnus Lundgren / Wild Wonders of China / Small transponder (sender) to be injected into the juvenile Chinese horseshoe crab (Tachypleus tridentatus) Ha Pak Nai, Yuen Long Districts, Hong Kong, China.

Magnus Lundgren / Wild Wonders of China / Secondary school student interviewed by TV channel about the release of juvenile Chinese horseshoe crabs (Tachypleus tridentatus) that have been artificially-bred by City University of Hong Kong, and...

Magnus Lundgren / Wild Wonders of China / Joe Cheung, Ocean Park Conservation Foundation Hong Kong , teaching secondary school students about Chinese horseshoe crab (Tachypleus tridentatus) Yuen Long District facing DHa Pak Nai, Yuen Long, Ho...

Magnus Lundgren / Wild Wonders of China / Secondary school students releasing juvenile Chinese horseshoe crabs (Tachypleus tridentatus) that has been bred by City University of Hong Kong, Ha Pak Nai wetlands, Yuen Long District, Hong Kong, Ch...

Magnus Lundgren / Wild Wonders of China / Secondary school students release a juvenile Chinese horseshoe crab (Tachypleus tridentatus) that has been artificially-bred by City University of Hong Kong, and collectively releasing them into the w...

Magnus Lundgren / Wild Wonders of China / Chinese horseshoe crab (Tachypleus tridentatus) tiny juvenile to be raised by the secondary school students and released into the wild. Ha Pak Nai wetlands, Yuen Long District, Hong Kong, China

Magnus Lundgren / Wild Wonders of China / Secondary school students release a juvenile, age six months, Chinese horseshoe crab (Tachypleus tridentatus) that has been bred by City University of Hong Kong, Ha Pak Nai wetlands area Yuen Long Dis...

Piotr Naskrecki / Japanese Horseshoe Crab (Tachypleus tridentatus) week old larvae settling on the bottom of the ocean to start feeding on small soft-bodied invertebrates, Japan

Piotr Naskrecki / Japanese Horseshoe Crab (Tachypleus tridentatus) flushing water backwards under its carapace to clear intake channels for breathing, Japan