Shell growth.

<p>(A) Growth after 3 months in the field. (B) Shell length after 12 months in the field. SS = sheltered-site snails (controls) replanted at the sheltered site, SE = sheltered-site snails transplanted to the expose site, EE = exposed-site snails (controls) replanted at the sheltered site, ES = exposed-site snails transplanted to the sheltered site. Data are means with standard errors. Sample sizes are given below the bars.