The fire and rescue service says the unknown substance found on Garwick Beach on Boxing Day was most likely palm oil.
Firefighters say though the risk to humans is low, if dogs eat it, it can be serious.
People are still being asked to avoid touching or removing the yellowy material from the beach south of Laxey.
Meanwhile the coastguard is warning people to keep dogs away from the area until the tide has washed leftover pieces away.
Police concerned for missing Ramsey man
Police are appealing to the public to help find a missing man from Ramsey.
Cultural organisation says income has dropped
Culture Vannin says its income from lottery duty fell by four per cent last year.
Students can win trip to NASA space school
Fancy winning a trip to a space school in Houston, Texas?
Yellow weather warning for ice
Ronaldsway Met Office has issued a yellow weather warning for frost and icy patches.
Emergency services dealing with ‘unknown substance’ on beach
The fire and rescue service says it’s currently dealing with an unusual substance washed ashore at Garwick Beach.
Archallagan hosts orienteering race
A special Boxing Day orienteering event will be held this morning.
Your guide to Boxing Day traditions
Two Island traditions will get underway later.
Have you taken the binman's tip this Xmas?
Residents in Douglas say somebody's stolen money they left out for binmen.
