Science| biology| John Montgomery| adjusting equipment to measure frequencies
Scienc| biology| Scott Base| fish hut| John Montgomery
John Montgomery| Steve Mercer| help Gary Housleyout of water
Gary Housley| prepares to dive| assisted by| John Montgomery| Steve Mercer
Dr John Montgomery at the Fish Hut
Dr John Montgomery fishing in the Fish Hut
Dr John Montgomery in fish hut
Biologist Dr John Montgomery
John Montgomery with underwater video equipment
Dr John Montgomery
John Montgomery
Dr John Montgomery with Scientific Equipment
