How otters save the sea grasses
WASHINGTON (AFP) - Otters can help rejuvenate sea grasses, a vulnerable natural resource that protects the coastline and provides habitat for fish, according to research published on Monday.
Scientists examined how the sea grasses in one area of California rebounded when otters returned to the area, and found that the otters helped by eating crab populations.
By keeping the crab numbers low and the sizes of the remaining crabs smaller, the otters removed a key threat to the sea slugs which feed on algae and keep sea grass leaves clean and healthy.
This meant that the presence of a top predator helped save the smallest players in the ecosystem and rendered it healthier.