Spotted eagle rays are around 17 to 35 cm wide at birth, but adults can be as long as 16 ft (5 meters), and have the wingspan of 3 meters (10 ft). An adult weighs 180 to 225 kg. The heaviest ever recorded weighed 230 kg. They have flat disk-shaped bodies, the top is dark blue or black in colour and is covered in white spots, and the belly is white. Spotted eagle rays also have flat snouts which look like a duck's bill. 