Topic: bluefin-21

In this March 31, 2014 photo, a shadow of a Royal New Zealand Air Force P-3 Orion aircraft is seen on low cloud cover while it searches for missing Malaysia Airlines Flight MH370 in the southern Indian Ocean. ((AP Photo/Rob Griffith))

Sarah Gray
In this Thursday, April 17, 2014 photo provided by the Australian Defence Force the Phoenix International Autonomous Underwater Vehicle (AUV) Artemis is craned over the side of Australian Defence Vessel Ocean Shield before launching the vehicle in to the southern Indian Ocean in the search of the missing Malaysia Airlines Flight 370Malaysia Airlines MH370. Up to 11 aircraft and 12 ships continue to scan the ocean surface for debris from the Boeing 777 that disappeared March 8 en route from Kuala Lumpur to Beijing with 239 people on board. (AP Photo/Australian Defence Force, Bradley Darvill) EDITORIAL USE ONLY (Lsis Bradley Darvill)

Sarah Gray
Crew move the U.S. Navy's Bluefin-21 autonomous underwater vehicle into position for deployment in the southern Indian Ocean, April 14, 2014. (Reuters/Peter D. Blair)

Sarah Gray
Malaysia Airlines flight MH192 bound for Bangalore turned back towards and parked at Kuala Lumpur International Airport in Sepang, Malaysia, Monday, April 21, 2014, after its right landing gear malfunctioned upon takeoff. The airline says Flight 192 carrying 166 people landed safely at the Kuala Lumpur International Airport early Monday, four hours after it departed. (AP Photo/Vincent Thian) (AP)

Sarah Gray
Crew move the U.S. Navy's Bluefin-21 autonomous underwater vehicle into position for deployment in the southern Indian Ocean, April 14, 2014. (Reuters/Peter D. Blair)

Sarah Gray
Crew move the U.S. Navy's Bluefin-21 autonomous underwater vehicle into position for deployment in the southern Indian Ocean, April 14, 2014. (Reuters/Peter D. Blair)

Sarah Gray
A man places a LED candle after a mass prayer for the missing Malaysia Airlines Flight MH370, in Kuala Lumpur, Malaysia, Sunday, April 6, 2014. The head of the multinational search for the missing Malaysia airlines jet says that electronic pulses reportedly picked up by a Chinese ship are an encouraging sign but stresses they are not yet verified. (AP Photo/Lai Seng Sin) (Lai Seng Sin)

Sarah Gray
In this April 4, 2014, photo provided by the Australian Defence Force, the Australian Defence vessel Ocean Shield tows a pinger locator in the first search for the missing flight data recorder and cockpit voice recorder in the southern Indian Ocean. Ocean Shield, which is carrying high-tech sound detectors from the U.S. Navy, was investigating a sound it picked up. (AP Photo/ADF, LEUT Kelly Lunt, HO) EDITORIAL USE ONLY (Leut Kelly Lunt)

Sarah Gray