Fig. 4: Illustrated health rating based on the amount of sediment aggregated on the bell and mucus produced.
From: Experimental mining plumes and ocean warming trigger stress in a deep pelagic jellyfish

Scores indicate: 1. >30% sediment-mucus coverage, substantial sloughing of mucus (i.e. on bell, lappets and tentacles), 2. <30% sediment-mucus coverage, moderate sloughing of mucus (i.e. on lappets only), 3. Powder-like mucous cover, no mucus sloughing, 4. Clean bell.