Same goes for whales, dolphins and porpoises
The Manx Whale and Dolphin Watch is asking members of the public to report basking sharks.
It says 'sightings have been strewn all over Facebook' over the last few days but it's becoming difficult to find the details to log them.
The organisation adds, with a small team on the ground, it would only take five minutes to report and it would rather have 20 people reporting the same shark than none at all.
Investigation underway into fire station blaze
At the height of the incident nine fire appliances on scene
Thompson 'confident' in MGP/Classic TT adaptability
Clerk of the Course says there's 'wriggle room' in the event of disruption
Island on 'right track' to retaining biosphere status
However, chair of UNESCO Biosphere Isle of Man stresses no decision is made yet
Nominations open for Douglas Council's Community Award scheme
Mayor says it 'brings out the best' of the people of the city