Quote HawkClimb (
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I recently discovered that by clicking on a coral in a part of the lost isle reef (at the end of a branch underneath the top-left arm of the 'T')
Edit: Found it, I'm thinking it's more of an available clickable location for one of the quests. (Which can be accessed in another reef if you can't get to Lost yet.)
Edit 2: Checked Pebble yesterday on a hunch, and - there is a quest that requires you to click a pink piece of coral in Lost, if you have access - or Pebble if you don't. When I clicked the coral in Pebble that is left searchable due to said quest, the same thing happened, so this isn't a new bonus. (:
) Either way, I'd like you to inform you guys of my find, and I'm anxious to hear if anybody else has found this too 
