How technology and robotics are helping Brazil monitor and control an invasive coral species

When the expanded yellow tentacles of the sun coral began to appear on the Brazilian coastline, alarms rang. This species, also known as Tubastraea, was not supposed to be there. The movement of oil platforms and other shipping near Rio de Janeiro in the late 80s dragged the non-reef-building coral. Since then, it invaded and colonized reef habitats along the Brazilian coast.