Luciano Candisani / French Angelfish (Pomacanthus paru) pair, Rocas Atoll, Brazil

Norbert Wu / Australian Ghost Shark (Callorhinchus milii) trunk-like snout detects prey in sea bottom, primitive fish relative to sharks, lives in the deep sea, New Zealand

Norbert Wu / Spotted Ratfish (Hydrolagus colliei) deep sea fish, Monterey, California

Flip Nicklin / Queen Angelfish (Holacanthus ciliaris) juvenile, Cocos Island, Costa Rica

Pascal Kobeh / Queen angelfish or blue or golden angelfish (Holacanthus ciliaris) Cozumel Island, Yucatan peninsula, Mexico.

Sergio Hanquet / Angel shark (Squatina squatina) resting on sea floor. Tenerife, Canary Islands.

Sergio Hanquet / Angel shark (Squatina squatina) resting on sea floor. Tenerife, Canary Islands.

Magnus Lundgren / Wild Wonders of China / Semicircle angelfish (Pomacanthus semicirculatus) juvenile, Kenting National Park, Hengchun Peninsula of Pingtung County, Taiwan

Magnus Lundgren / Wild Wonders of China / Herald's angelfish (Centropyge heraldi) Green Island, a small volcanic island in the Pacific Ocean, Taiwan

Pascal Kobeh / Angel shark (Squatina squatina) buried in the sand, Canary Islands

Pascal Kobeh / Angel shark (Squatina squatina) burried in the sand, Canary Islands

Pascal Kobeh / Angel shark (Squatina squatina) swimming above the sandy bottom with divers in the background, Canary Islands