Up to 20 centimeters
Crayfish-like
1.5 to 2.2 meters
Large and robust
50-63 cm (20-25 inches)
Medium-sized, muscular
Average length of 1.2 to 1.5 meters (4 to 5 feet)
Thick and heavy-bodied
9 to 15 feet
Long and cylindrical
1-4 mm
Small, soft-bodied
10-12 inches (25-30 cm)
Slender and elongated
7.5-8.3 inches (19-21 cm)
Small to medium-sized bird with a compact body and short, rounded wings
3-5 feet
Heavy and cylindrical body with a short tail
Up to 18 inches (45 cm)
Slender and cylindrical
1.2 to 2.0 meters
2.5-6 mm
Small and slender
15-20 cm
4-10 mm
Cylindrical
9-13 cm (3.5-5 inches)
Short and stout with a flattened body
12-14 cm
Small and compact
Approximately 4 to 6 inches (10 to 15 centimeters)
Oval and flat
Average length is about 0.7 to 1.2 meters (2.3 to 3.9 feet)
Streamlined and cylindrical
