Media release
25 September 2012
Badly injured dolphin prompts DOC warning to boaties
A bottlenose dolphin has been badly injured after being struck by a boat near Great Barrier Island in the Hauraki Gulf
Marine Park.
Dwyer wound close up
The injured dolphin has a large wound behind its dorsal fin and was observed swimming alongside another bottlenose
dolphin believed to be one of its parents. The large wound and two smaller lacerations on the tail are consistent with
propeller strike injuries.
Dwyer head visible
It was sighted at Blind Bay on Great Barrier Island by Sarah Dwyer, a PhD student at Massey University’s Coastal-Marine
Research Group. She photographed the injured dolphin last week while undertaking systematic surveys for marine mammals
in the Hauraki Gulf as part of a four year study.
Sarah Dwyer says the injured dolphin and its companion moved more slowly than the other dolphins in the group of more
than 50 individuals and she was surprised by the distances it could swim given the severity of its injuries.
The pair are regular visitors to Great Barrier Island and the inner Hauraki Gulf. They’ve been seen on several occasions
since May 2010, always together. The injured dolphin was previously sighted four weeks ago, fit and well off
Whangaparapara on Great Barrier Island.
Department of Conservation’s Warkworth and Great Barrier Area Manager Tim Brandenburg, says boat operators need to be
aware that there are dolphins in the Hauraki Gulf Marine Park throughout the year and they need to take care to avoid
hitting them.
“These strikes are avoidable if everyone takes more care on the water. Small and large vessels can cause significant
harm to marine mammals. Last summer a common dolphin died as a result of receiving lethal spinal injuries after being
struck by a jet ski.”
Tim Brandenburg says research by Massey University and the University of Auckland is providing valuable information
about dolphin and whale activity in the Hauraki Gulf Marine Park.
“Through their work, we now know that dolphins and Bryde’s whales that live in the Hauraki Gulf Marine Park are
vulnerable to being hit by boats and ships.”
DOC is working with shipping interests, government agencies, scientists, environmentalists and iwi to reduce ship
strikes on Bryde’s whales in the Hauraki Gulf Marine Park.
DOC administers the Marine Mammals Protection Act 1978, which provides for the conservation, protection and management
of marine mammals. It’s an offence to harass or disturb marine mammals. Breaches of the legislation carry penalties of
up to six months imprisonment or fines up to $250,000.
Rules for boaties in the vicinity of dolphins, whales and other marine mammals, can be found at http://www.doc.govt.nz/publications/conservation/native-animals/marine-mammals/sharing-our-coasts-with-marine-mammals/rules/
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