Jordi Chias / Spotted catshark (Scyliorhinus canicula) just hatched from egg case that is on Seafan (Paramuricea clavata), Ullastres seamount, Costa Brava, Llafranch, Catalunya, Spain

Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) silhouetted against the sun, Cat Island, Bahamas, Atlantic Ocean

Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) with Pilot fish (Naucrates ductor). Tropical West Atlantic Ocean, off Cat Island, Bahamas.

David Perpinan / Anesthesia of a captive bamboo shark (Chiloscyllium plagiosum) Small repro only

Heidi & Hans-Juergen Koch / Greater Spotted Dogfish (Scyliorhinus stellaris) embryo in mermaid's purse egg capsule, native to Atlantic and Mediterranean

Tony Wu / Whitespotted bamboo shark (Chiloscyllium plagiosum) working his way into a crevice to approach female to mate. The males two claspers (the organs used for inseminating the female shark) are clearly vi...

Alex Mustard / A diver has a dramatic close encounter with Silky shark (Carcharhinus falciformis) Cat Island, Bahamas. Tropical North Atlantic Ocean

Tony Wu / Whitespotted bamboo shark (Chiloscyllium plagiosum) male initiates the courtship process by biting and holding on to the female shark, Kannoura, Shikoku, Kochi-ken, Japan

Tony Wu / Whitespotted bamboo shark (Chiloscyllium plagiosum) empty egg sacs - the appearance of these empty eggs sacs seems to coincide with heightened male shark activity, with ensuing courtship and copulatio...

Tony Wu / Whitespotted bamboo shark (Chiloscyllium plagiosum) male initiates the courtship process by biting and holding on to the female shark, Kannoura, Shikoku, Kochi-ken, Japan

Tony Wu / Whitespotted bamboo sharks (Chiloscyllium plagiosum) pair mating with the male above, insertion of right clasper clearly visible. Kannoura, Shikoku, Kochi-ken, Japan

Tony Wu / Whitespotted bamboo sharks (Chiloscyllium plagiosum) pair mating with the male above, insertion of right clasper clearly visible. Kannoura, Shikoku, Kochi-ken, Japan