Because they need sunlight, they inhabit the upper, sunlit epipelagic zone, which includes the coastal or neritic zone.
en.wikipedia.org Unlike most other tunicates, they live in the pelagic zone, specifically in the upper sunlit portion of the ocean (photic zone) or sometimes deeper.
en.wikipedia.org He reported that the problems and strivings, the worries and frustrations of everyday life vanished; in their place was a majestic, sunlit, heavenly inner quietude.
en.wikipedia.org His works are known for their romantic charm and often worked with sunlit scenes at rivers or ponds.
en.wikipedia.org Others are the kind of pictures taken by amateur photographers, conventionally composed, sharply focused, with appealing subject matter such as woodland glades and sunlit gardens.
en.wikipedia.org