Sharks also play a role in regulating the behaviour of their prey species by intimidating them. This act of intimidating prevents the other marine animals from overgrazing on vital habitats. Some scientists have managed to draw the link between the sharks’ act of intimidating and the survival of the ecosystem.
Turtle and Sea Grass Bed – Source: Photo by Guillen Perez from Flickr
For example, research has shown that the health of the sea grass beds is being maintained by the sharks. Sharks effectively prey on the turtles which feed on sea grass. Without the presence of sharks, turtles are observed to be grazing on the sea grass at a fixated area, causing the habitat to be destroyed. With the presence of sharks, turtles are observed to be grazing over a broader area which gives the grass enough time to replenish itself.