'When a tiny parasite enters an oyster's shell, mantle cells cover it with nacre until this is formed'
a pearl
THIS SIDE OF PARASITES: When a tiny parasite enters an oysters shell, mantle cells cover it with nacre until this is formed
When a tiny parasite enters an oyster's shell, mantle cells cover it with nacre until this is formed
When a tiny parasite enters an oyster's shell, mantle cells cover it with nacre until this is formed
THIS SIDE OF PARASITES
a pearl
THIS SIDE OF PARASITES