The Barrier Reef - serve as a barrier between the ocean and the land. They slow down the harsh waves, protecting the coast. -usually a wide, deep lagoon separating the reefs from the land mass. - only grows where there has been a change of sea level on the adjacent coast PICTURE: The Great Barrier Reef. It is located off the northeast coast of Australia . It measures up to 150 km long .
Coral reefs have a symbiotic relationship with a type of microscopic algae, which require sunlight. Therefore, coral reefs must exist where sunlight penetrates so that they can thrive and grow. CORAL REEFS NEED: sunlight
Plankton Eaters There are many fish that feed on plankton. They include damselfish, wrasses, and groupers, just to name a few. Damselfish wrasses wrasses Groupers
There are also herbivore, invertebrate, omnivore, and piscivores fish. Herbivore fish Invertebrate fish Omnivore fish Piscivores fish
Echinoderms Are a group of animals that include starfish, urchins, feather stars, and sea cucumbers. Starfish Flaming sea urchin Feather stars Sea urchins Sea Cucumber
Flatworms Flatworms are the simplest of worm groups. There are about 20,000 species in this group. They are bilateral, have an eyespot, have a simple nervous system, and have no internal body cavity. They can be free living or parasitic.
Sedimentation, Construction along coasts, mining, farming, and logging of Rainforests cause soil run off which smothers coral reefs blocking sunlight that it needs to survive. Dangerous