Blinding headache, pain in belly, diarrhea ..... Its probably a bug, not your dinner nor the seaweed.
It is going around the island and elsewhere.
Reports are that it lasts a few days.
Pepto bismol helps.

Similar symptoms reported on mainland. Something going round. Anyone remember "Where there is no Doctor"? We used that before internet. And the better docs we have now.

Test for Paratyphoid Type C. See a doctor if you have the symptoms above, best not to put it off.

Thanks Diane... You alerted everybody with this thread and listed the symptoms. Thanks Simon for a possible clue.