S1I1R1E1N1I1A1N1S1
9 points
SIRENIANS is validvalid
SIRENIAN, any of an order of aquatic mammals
SIRENIAN, any of an order of aquatic mammals including the manatee and dugong
SIRENIAN, any of an order of aquatic mammals
SIRENIAN, any of an order of aquatic mammals including the manatee and dugong