Picked up a black plastic rubbish bag on the propeller. Tried to shake it off by going astern but just succeeded in shaking the rubbish out. So a quick snorkel in the green pea soup of organic material that is responsible for the brilliant blue bioluminescence at night.

Position 13° 57.558′ N 42° 19.945′ E
COG 319T
SOG 4.6kt