Satellites monitor health of coral reefs
This IKONOS 4-meter
resolution image shows part of an atoll in the Pacific Ocean. Atolls are coral islands encircling a lagoon.
Coral reefs are some of the most diverse and valuable ecosystems on Earth. They are home to myriad fish and invertebrate reef species.
However, reefs worldwide are increasingly under threat from coral bleaching.
Scientists use satellite data to survey and map coral decline all over the world.
Question:
How can satellites help to study and protect coral reefs ?