Beach Buddies is on a mission to pick up thousands of tiny pieces of polystyrene following recent storms.
The organisation says it found the river and beach at Ballaugh covered after poor weather.
The charity is looking for volunteers who may have waders or - better still - chest waders to remove the polystyrene from the river.
Beach Buddies will supply equipment such as nets and seives.
The session takes place on Sunday morning from 10.30am to 12pm.
Crogga still owes the Isle of Man Government money
DoI says works at Liverpool ferry terminal will take longer
Over 50 employment tribunals outstanding at the DoI
Free period products bill raises cost concerns for MHKs
Key road in Ramsey to re-open early this afternoon
Want to start training to become a nurse?
Appeal launched after fly-tipper filmed dumping rubbish
Prepare your pets for Bonfire Night, says Manx charity