The moon orbits Earth at an avaerage speed of 2,288 miles per hour (3,683 kilometres per hour). The Moon travels at different speeds during different parts of its orbit. It moves slowest when it is at furthest distance from Earth. The Moon moves fastest in its orbit when it is closest to Earth.
Some animals travel in shallower waters at times. These include larger fish, such as swordfish, chain catsharks and cuttlefish. Several types of eels, including wolf eels and snipe eels, can also be found in the mesopelagic zone. Some herbivores may venture into the mesopelagic zone at times, but do not stay there due to lack of food.
Eels are elongated fish, ranging in length from 5 cm (2.0 in) in the one-jawed eel (Monognathus ahlstromi) to 4 m (13 ft) in the slender giant moray. Adults range in weight from 30 g (1.1 oz) to well over 25 kg (55 lb). They possess no pelvic fins, and many species also lack pectoral fins.ome species of eels also live in deeper water on the continental shelves and over the slopes deep as 4,000 m (13,000 ft). Only members of the Anguilla regularly inhabit fresh water, but they, too, return to the sea to breed. The heaviest true eel is the European conger.