A group of University of Otago students discovered an entangled humpback whale while out on the ocean conducting field work yesterday.
The whale, sighted about 10km east of Karitane off the Otago coast, was found with rope wrapped around its body and tail and was trailing a buoy which appeared to be from a fishing vessel.
The group reported the encounter to the Department of Conservation (DoC), which wanted to hear about any other sightings as soon as possible.
"At this time of year, humpback whales begin their northward migration from summer feeding grounds in the Antarctic to winter breeding grounds in the tropics, sometimes taking them past the New Zealand coast," said Dr Will Rayment, of the University of Otago's Department of Marine Science.
"With species like humpbacks and southern right whales now recovering after the ban on commercial whaling we are seeing more and more whales in our coastal waters."