SIZE :
65 cm, up to 73 cm.
LIFE EXPECTANCY :
15 to 25 years.
LIFE CYCLE :
Females reach sexual maturity around age 11.
Fertilization is internal. Males use their erectile hooks to transfer sperm. Smooth skates reproduce all year round, with females laying 40 to 100 eggs a year. They look like long brown capsules with pointed horns at the corners and are about 5.5 cm long and 4 cm wide.