Complex sentence: Like other thresher sharks, common threshers are ovoviviparous and give birth to litters of two to four (rarely six) pups off California, and three to seven pups in the eastern Atlantic.
Split into simpler sentences: Like other thresher sharks, common threshers are ovoviviparous. They give birth to litters of two to four (rarely six) pups off California, and three to seven pups in the eastern Atlantic.