A 26-year-old man has been charged with the murder of the 22-year-old and appeared at Auckland District Court on Monday.
A 26-year-old man was been detained by detectives in New Zealand as police launched a murder investigation.
Grace Millane has not been heard from since December 1.
Grace Millane was last seen on Saturday in Auckland.
The journey finished in a town called Bluff.
The conservation workers hope the pygmy killer whales will return to deeper water.
The needle is the latest to be found in New Zealand since several were found in a punnet of strawberries in September.
A hiker discovered the whales on Stewart Island.
Ireland clung on despite brutal New Zealand pressure to seal a memorable win 16-9 at the Aviva Stadium.
New Zealand have beaten England 16-15 in their Test match at Twickenham