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