9 to 30 inches
Oval and laterally compressed
Approximately 2.5 meters
Slim and agile
Approximately 90-100 cm
Slender with long wings and a forked tail
Up to 1 meter (3 feet)
Streamlined and elongated
7-17 millimeters
Slender body with long legs
Up to 31 cm (12 in)
Lizard-like
6-7 cm (2.4-2.8 in)
Small and compact
5.5 - 6.3 inches
Up to 35 centimeters
Soft-bodied with a long tubular shape
Average length varies among species, with some reaching up to 10 feet long
Streamlined and muscular
40-50 cm
Medium-sized bird
3-4 feet
Large bird with stocky body, long legs, and a fan-shaped tail
25-32 inches
Large, broad wings, and a long, narrow tail
10-18 inches
Medium-sized, slender and muscular
Medium-sized
2-5 cm
Small and round
Varies depending on species
Dome-shaped shell
Up to 13 meters (43 feet)
Large, elongated body with eight arms and two long tentacles