sentences:  Shysharks are oviparous with females producing egg capsules (known as "mermaid's purses") two at a time.Reproduction has been investigated in the puffadder and dark shysharks; neither species appears to have a distinct breeding season, and their eggs take around three and a half weeks to hatch.Due to their small size, shysharks pose no danger to humans and are not sought by either commercial or recreational fishers.