Joshua Kutryk is diving for NASA's underwater simulation SEATEST 7

From September 17 to 29, CSA astronaut Joshua Kutryk is participating in NASA's SEATEST 7 underwater mission, which is taking place on a lunar habitat mockup off Santa Catalina Island in California, at a depth of about nine metres. 

The main goal of SEATEST 7 is to optimize the transport of cargo from landers to crewed pressurized living volumes, like a rover or a lunar habitat. (Credits: Canadian Space Agency, NASA)