Tony Wu / Plastic bottles and other rubbish, some with Korean writing, on a beach in Yamaguchi Prefecture, Chugoko, Honshu, Japan. June 2018.

Tony Wu / Plastic rubbish on a beach in Yamaguchi Prefecture, Chugoku, Honshu, Japan. June 2018.

Tony Wu / Juvenile Grass puffer fish (Takifugu niphobles) patrolling extremely shallow water at night. Sea of Japan, Yamaguchi Prefecture, Japan.

Tony Wu / Juvenile Grass puffer fish (Takifugu niphobles) patrolling extremely shallow water at night. Sea of Japan, Yamaguchi Prefecture, Japan.

Tony Wu / Juvenile Grass puffer fish (Takifugu niphobles) partially buried in substrate to conceal itself to rest. Sea of Japan, Yamaguchi Prefecture, Japan.

Tony Wu / Newly hatched Japanese horseshoe crab (Tachypleus tridentatus) swimming into murky nutrient-rich water column filled with frenzy of copepods (Copepoda) . Sea of Japan, Yamaguchi Prefecture, Japan.

Tony Wu / Pair of Mud crabs (Scylla sp.) preparing to mate in late summer, where male is on top and female upside-down beneath. Sea of Japan, Yamaguchi Prefecture, Japan.

Tony Wu / Female Mud crab (Scylla sp.) carrying eggs during late summer. Sea of Japan, Yamaguchi Prefecture, Japan.

Tony Wu / Close-up view of polyps of coral (Alveopora japonica). Sea of Japan, Yamaguchi Prefecture, Japan.

Tony Wu / Close-up view of polyps of coral (Alveopora japonica) with two planulas, larval corals, emerging from coral mouth. Sea of Japan, Yamaguchi Prefecture, Japan.

Tony Wu / Close-up view of polyps of coral (Alveopora japonica) with two planulas, larval corals, emerging from coral mouth. Sea of Japan, Yamaguchi Prefecture, Japan.

Tony Wu / Female Northern pygmy squid (Idiosepius paradoxus) depositing eggs on a blade of eelgrass (Zostera marina), next to a white mass of eggs laid previously, Yamaguchi Prefecture, Japan.

Tony Wu / Female Northern pygmy squid (Idiosepius paradoxus) depositing eggs on a blade of eelgrass (Zostera marina), Yamaguchi Prefecture, Japan.

Tony Wu / Northern pygmy squid (Idiosepius paradoxus) eggs on a blade of eelgrass (Zostera marina), Yamaguchi Prefecture, Japan.

Tony Wu / Northern pygmy squid (Idiosepius paradoxus) consuming an amphipod crustacean, Yamaguchi Prefecture, Japan.

Tony Wu / Northern pygmy squid (Idiosepius paradoxus) wrapped around a skeleton shrimp (Caprellidae) prey, Yamaguchi Prefecture, Japan.

Tony Wu / Northern pygmy squid (Idiosepius paradoxus) consuming a skeleton shrimp (Caprellidae), Yamaguchi Prefecture, Japan.

Tony Wu / Female Northern pygmy squid (Idiosepius paradoxus) attached to on a blade of eelgrass (Zostera marina), Yamaguchi Prefecture, Japan.

Tony Wu / Female Northern pygmy squid (Idiosepius paradoxus) hunting for prey, Yamaguchi Prefecture, Japan. Note the white strands on her head (spermatophores passed to her by males)

Tony Wu / Northern pygmy squid (Idiosepius paradoxus) female accepting spermatophore from the smaller, darker male (right) while depositing eggs on a blade of eelgrass (Zostera marina), Yamaguchi Prefecture, Ja...

Tony Wu / Female Northern pygmy squid (Idiosepius paradoxus) preparing to lay another egg on a blade of eelgrass (Zostera marina), Yamaguchi Prefecture, Japan.

Tony Wu / Female Northern pygmy squid (Idiosepius paradoxus) depositing eggs on a blade of eelgrass (Zostera marina), Yamaguchi Prefecture, Japan.

Tony Wu / Female Northern pygmy squid (Idiosepius paradoxus) depositing eggs on a blade of eelgrass (Zostera marina), Yamaguchi Prefecture, Japan.

Tony Wu / Female Northern pygmy squid (Idiosepius paradoxus) depositing eggs on a blade of eelgrass (Zostera marina), Yamaguchi Prefecture, Japan.

Tony Wu / Female Northern pygmy squid (Idiosepius paradoxus) depositing eggs on a blade of eelgrass (Zostera marina), Yamaguchi Prefecture, Japan.

Tony Wu / Yellow spotted stink bug (Erthesina fullo) nymph in fifth or final instar. Invasive species in Japan. Yamaguchi Prefecture, Honshu, Japan. August 2020.

Tony Wu / Yellow spotted stink bug (Erthesina fullo) nymph in fifth or final instar. Invasive species in Japan. Yamaguchi Prefecture, Honshu, Japan. August 2020.

Tony Wu / Tri-spine horseshoe crab (Tachypleus tridentatus) juvenile aged two years, in fifth instar, beside 5 Yen coin for scale. Endangered species due to habitat loss and over-harvesting for food and biochem...

Tony Wu / Tri-spine horseshoe crab (Tachypleus tridentatus) juvenile aged two years, in fifth instar. Endangered species due to habitat loss and over-harvesting for food and biochemical industry. Yamaguchi Pref...

Tony Wu / Tri-spine horseshoe crab (Tachypleus tridentatus) pair on sea floor at night. Female searching for location to spawn, male clasped onto rear of female will fertilise eggs once deposited. Yamaguchi Pre...

Tony Wu / Tri-spine horseshoe crab (Tachypleus tridentatus) male fertilising eggs deposited by female in substrate. Female crab buried on sea floor beneath male. Yamaguchi Prefecture, Honshu, Japan. July.

Tony Wu / Tri-spine horseshoe crab (Tachypleus tridentatus) pair on sea floor at night. Female digging into substrate before depositing eggs, male clasped onto rear of female to fertilise eggs once deposited. Y...

Tony Wu / Tri-spine horseshoe crab (Tachypleus tridentatus) pair on sea floor at night. Female digging into substrate before depositing eggs, male clasped onto rear of female to fertilise eggs once deposited. Y...

Tony Wu / Tri-spine horseshoe crab (Tachypleus tridentatus) pair on sea floor at night. Male clasped onto rear of female, male fertilising eggs female has deposited in substrate. Yamaguchi Prefecture, Honshu, J...

Tony Wu / Tri-spine horseshoe crab (Tachypleus tridentatus) pair on sea floor at night. Female digging before depositing eggs, disturbance releases air bubbles from substrate. Male clasped onto rear of female w...

Tony Wu / Tri-spine horseshoe crab (Tachypleus tridentatus) pair walking across sea floor at night. Female searching for location to spawn, male clasped onto rear of female to fertilise eggs once deposited. Sna...

Tony Wu / Tri-spine horseshoe crab (Tachypleus tridentatus) pair on sea floor at night. Female digging before depositing eggs, disturbance releases air bubbles from substrate. Male clasped onto rear of female w...

Tony Wu / Tri-spine horseshoe crab (Tachypleus tridentatus) pair walking across sea floor at night. Female searching for location to spawn, male clasped onto rear of female to fertilise eggs once deposited. Yam...

Tony Wu / Jawfish (Opistognathus iyonis) male mouth brooding eggs, which are hatching with juveniles swimming away. Yamaguchi Prefecture, Honshu, Japan. July.