photo of eggs of <i><a href="//commons.wikimedia.org/wiki/Pomacea_paludosa" title="Pomacea paludosa">Pomacea paludosa</a></i> (top) and <i><a href="//commons.wikimedia.org/w/index.php?title=Pomacea_isularum&amp;action=edit&amp;redlink=1" class="new" title="Pomacea isularum (page does not exist)">Pomacea isularum</a></i> (down). Scale Bar: 5 cm.
Timothy A Rawlings, Kenneth A Hayes, Robert H Cowie and Timothy M Collins
CC BY 2.0
<p>Cropped from Figure 3 <a rel="nofollow" class="external free" href="http://www.biomedcentral.com/1471-2148/7/97/figure/F3">http://www.biomedcentral.com/1471-2148/7/97/figure/F3</a> from:<br></p>
Daniel J Jackson, Gert Wörheide and Bernard M Degnan: <a rel="nofollow" class="external text" href="http://www.biomedcentral.com/1471-2148/7/97">The identity, distribution, and impacts of non-native apple snails in the continental United States</a>. - BMC Evolutionary Biology 2007, 7:97doi:10.1186/1471-2148-7-97. (Cropped and arranged by <a href="//commons.wikimedia.org/wiki/User:Snek01" title="User:Snek01">User:Snek01</a>.)