Skyglow has undergone an enormous change in the past fifty years and its impact extends well off-shore. Since most marine life lives in regions near the surface where light can still penetrate, it makes sense that the change in skyglow may have an impact.
The light pollution that augments skyglow has been shown to have an adverse impact on life. It is one of the easiest forms of pollution to address, but there isn't much will to do so.
(a tip of the hat to Sukie)