The Department of Conservation is asking the public to report sightings of an entangled bottlenose dolphin — previously sighted in waters around western Auckland.
In a statement, DOC said the dolphin was subadult, or juvenile, and was travelling with a fully grown dolphin.
The first report of the dolphin’s condition was on December 29 after it was seen entangled in a fishing net in the western Waitematā Harbour.
Yesterday afternoon, DOC received the last report of its whereabouts, after it was seen near the Huapai Golf Course at the edge of Waitematā Harbour.
DOC said it had been monitoring dolphins in the Riverhead/Herald Island area. Although the dolphins “appeared calm”, the positioning of the net might be limiting the entangled dolphin’s movement and ability to dive.
While preparing to intervene, DOC said there was “added difficulty” due to the dolphin’s companion animal.
“Careful planning is required to ensure a safe outcome for both animals.”
DOC operations manager Kristy Prior said it was “vital” to locate the dolphin as soon as possible.
“The safety of both the animal and people responding to its distress is our top priority. Entangled marine mammals face significant risks, and careful planning is needed to ensure the best outcome.”
According to DOC, entanglement in fishing gear was a growing threat to marine life.
It urged fishers and boaties to minimise floating slack lines when setting fishing gear, and to dispose of waste and old gear “responsibly” to prevent marine debris.
“Entanglements like this happen one to two times a year around New Zealand,” Prior added.
“We have the skills, equipment, and experience to respond, when necessary, but locating the animal is the first crucial step.”
In assessing the approach for the entangled dolphin, DOC said it would follow strict protocols and be equipped with specialist tools to ensure safety for both the marine mammal and rescuers.
DOC said anyone who spotted the dolphins should call 0800 36 24 68 as soon as possible with the location and any observations around the behaviour of the dolphin.