Marine Plants / Algae
Dr. Caroline Rogers
Seagrasses are true flowering plants that live underwater. They live in shallow, clear water, allowing enough light for them to photosynthesize, just like land plants. They spread primarily through the growth of roots and rhizomes, often forming large meadows in sandy or muddy substrate. These root systems help stabilize sediment and reduce shoreline erosion.
Boat anchors and propellers cause great damage to seagrass beds. Anchors can rip out the roots and gouge holes that undermine the surrounding root systems. The area "implodes," and it may take years for these areas to recover, if they recover at all.
Never Anchor in Seagrass or Coral
Did You Know?
There are three species of lizards found on St. John. The iguana, which is not a true lizard, are vegetarians and are often found in trees. When threatened, they escape by dropping to the ground or into water. They can fall 40-50 feet to a hard surface without injuring themselves.