KEY POINTS:
Three people have been rescued off a small rock island south of Bluff after their boat sank early this afternoon.
Their small pleasure boat sank off Landsend, south of Bluff, at 12.25pm, southern police communications said.
"They ended up in the water and managed to land on a small rock island nearby until they were rescued by another boat," police said.
One of them, a child, has been treated for hypothermia.
- NZPA
