A black Labrador patrols the Scottish coastline closely. His name is Skiathos.

He uses his sense of smell to track down carpet sea squirts, an invasive marine species hiding among seaweed.

Known as "sea vomit" due to their sticky mucus, carpet sea squirts blanket seaweed and marine structures, threatening the habitats of native species.

Skiathos expertly detects these creatures, which are difficult to spot with the naked eye, using his exceptional sense of smell.

Originally trained as a mountain rescue dog, he has now transformed into a guardian protecting the marine ecosystem!

In recognition of his extraordinary contributions, he even won the "Animal of the Year" award from the International Fund for Animal Welfare.

(Photo: IFAW website, X @Complex, @JingRoadTrip)