Eelgrass plants or seeds from
mainland estuaries are carried to Sable by currents. Storm
waves wash them into Lake Wallace. These eelgrass plants
produce seeds, but they are probably not isolated because
plants continue to arrive.
Tropical beans from the Caribbean
drift northward in the Gulf Stream and wash ashore on Sable.
The climate is too cold for the beans to germinate. Countless
other plants and animals wash ashore like this, but cannot