There is much to be seen in this photograph. The "newt-suit" is the yellow robot-like "creature" on deck - an aluminium jointed suit containing a CCR rebreather. Inside an operator can operate at great depths but internally at one athomosphre pressure (or one bar). The suit was designed and built by Phil Nuytten of Nuytco Ltd - hence the name). It is powered from the surface and controlled by both the encased operater and crew ship-side.
Beside this is the red 2-man submarine. More details to follow. Next to the submarine is a small ROV (robotically operated vehicle). The scale of these machines is interesting. The ROV is so small it is difficult to see on the gunnel with 3 crew inspecting it. Small it is, but very useful too - such is the speed of progress in the area of underwater technology