4-8 inches
Slender and elongated
Average length of 1 meter (3 feet) and weight of 9 kg (20 lbs)
Streamlined and fusiform
45-63 cm
Medium to large size, streamlined body
40 to 70 cm
Small, stout body with short legs
10-12 inches
Small and sturdy
Up to 23 feet
Large and robust
50-60 cm (19.5-23.5 inches)
Small, stocky body with long limbs
60-70 cm
Large and muscular
Up to 50 centimeters
Long and slender
Varies from a few centimeters to several inches
Soft, slimy, and elongated body with no visible shell
30-40 cm
Slender and streamlined
Approximately 5-6 meters
Around 1.2 inches (30 mm)
Oval and dorsoventrally flattened
6-10 inches
Slender and cylindrical
14-16 inches
Medium-sized with a muscular build
15-20 inches (38-51 cm)
Up to 14 feet
Cylindrical and laterally compressed
60-90 cm (24-35 inches)