sawshark pristiophoridae displays its elongated body and distinctive snout highlighting its unique adaptations for

sawshark pristiophoridae marine fish elongated body distinctive snout hunting adaptations aquatic predator species ocean life elasmobranch shark characteristics unique predatory behavior tooth structure anatomy environment underwater identification deep sea coastal waters fin sensory adaptation biodiversity ecosystems morphology swimming elasmobranchii gill prey capture dentition oceanic movement evolution explorations biological classification organisms ai generated