Coastguard team from Ventnor and Bembridge are currently attending reports of a large amount of pollution between Cowes and Wootton
Investigations are underway to identify if the substance is naturally occurring or whether there has been a pollution incident, such as an oil spill.
The incident began shortly before 9.45am on Wednesday morning.
If you see any signs of pollution dial 02392 552100 (Non-Emergency number).
Officials say that a number of people have contacted HM Coastguard saying they have seen what looks like foam coming ashore.
Duty controller Phil Norman has said:
“At this stage, we are in the early part of an investigation to see what it is and see whether further action needs to be taken”.