Blue shark (Prionace glauca), Faial-Pico Channel, Azores Islands, Portugal. The blue shark is a species of requiem shark, in the family Carcharhinidae, that inhabits deep waters (images taken though between 5 and 10 meter below water) averaging around 3.1 m (10 ft) and preferring cooler waters. They can live up to 20 years, can move very quickly and feed primarily on small fish and squid, although they can take larger prey.
Royal angelfish (Pygoplites diacanthus), Ras Muhammad National Park, Red Sea, Egypt. The body of the royal angelfish is moderately elongate, is very compressed and can reach a length of up to 25 centimetres (9.8 in) It’s widely distributed throughout the Indo-Pacific and can be found in the Red Sea and Indian Ocean around East Africa and the Maldives, stretching to the Tuamoto Islands, New Caledonia, and Great Barrier Reef. The royal angelfish occurs at depths ranging from 0 to 80m (0 to 262 ft), in coral rich areas of lagoons, reefs, and are also often found in the vicinity of caves. It is a carnivorous species that feeds on sponges and tunicates located throughout reefs and underwater caves. They are a non-migratory species that can be found solitary, in pairs, or groups.
Fishermen fishing in the chars (shifting sediment islands) of the river Padma in Rajshahi District, Bangladesh. The chars are being frequently visible as the river is drying up. Today is the International Day of Action for Rivers.