 |
Paired male claspers
Internal fertilisation
Males grasp with teeth to hold
Female skin twice as thick
Males insert clasper from either side
Males generally smaller |
 |
External egg development
(Oviparous)
Usually bottom dwellers
Eggs attached to substrate
No parental care after hatching
eg. Epaulette, Port Jackson, leopard sharks |
 |
Placental live birth
(Viviparous)
Multiple live young
Placental nourishment
No post-birth parental care
eg. Whaler sharks, hammerheads |
 |
Internal egg development - live birth
(Ovoviviparous)
Multiple eggs develop internally to live young
eg. Tiger, whale sharks
Variation - intrauterine cannibalism
Eggs and embryos eaten internally by most successful developing young.
One or two live young born
eg. Great white, mako and grey nurse sharks |
