Oliva caerulea

Oliva caerulea 44′,45,45′,48,48,48′,49′,51′,51′,52,56’mm Zanzibar Pongwe 0.4m to 1.9m 29℃ 17.12.08 (largest one),Nungwi Sazani Beach 1m to 2.1m 30℃ 19.12.08 (left & bottom ones),Mnemba Island South 1.5m to 6.3m 29℃ 22.12.08 (two far right one )