Today I did 3 dives, 2 with the Sigma 17-70mm (which i’ll write something on in the future) and then the last one with the Zeiss Milvus 50mm Macro lens, which is manual focus. The 50mm lens is the lens that I used for the Shrimpgoby in the video below, shooting at a higher than usual frame rate of 300 frames per second. So this is being played back at less than 1/10th of real time speed to show the detail in the finning method of the goby.
As you can see, the goby can maintain its position in the water column perfectly, and the technique is pretty similar to what we use to swim backwards with our fins on when diving on the muck.
This species of goby is an as yet undescribed Stonogobiops.