sleek gull
Not sure is it a bug or something but let’s see.
The quest item was dropped twice in a short of period. I've sent the first one and leave the second one outside of my screen once I’m finished to send the first one so my second one is gone so I’m trying to clear the trash but it’s never drop again not sure why.
Please tell me if I have to start a new game 
valid token
Not sure is it a bug or something but let’s see.
The quest item was dropped twi...
This part of the quest is incomplete, and you can't progress further at the moment. You can still heal more coral sites (there are 41 to clear), but other than that, the quest is over for now.
sleek gull
This part of the quest is incomplete, and you can't progress further at the mome...
I see but actually the item was dropped. Now I'm only at 28m and cannot continue to 41m as you said due to the item was gone.
valid token
I see but actually the item was dropped. Now I'm only at 28m and cannot continue...
I'm not sure what you mean by an item, but you know those things that you found that cleared a bunch of black vine things? That's a coral site. Diving doesn't go down 41m, there are 41 beacons (or whatever you want to call them) to find.
shy flicker
oh, the item you're talking about is the solar orb right? as you clear trash, you find them and you can click on them and they open up/glow
sleek gull
oh, the item you're talking about is the solar orb right? as you clear trash, yo...
Actually I've already clear the trash and it's dropped but when I leave it for a min and come back at the same position it's disappear.