(not sure if this happens only in Beta, or in main branch too)
Normally when Trawl Net is used up and dropped into the sea - it disappears after a while, and if items were still in it - they will float on water.
However sometimes Trawl Net doesn't disappear (even the empty one) and many days later I return to same area and it is still there.
I believe it should always disappear.
Maybe it happens when Trawl Net is manually dropped before it's full, not sure about that.
1. Use Trawl Net on boat 2. Drop Trawl Net 3. In 20 days come to the same spot - Trawl Net is still there