Possible Clues:

• Light cake; aquatic invertebrate
• Ask for money to clean up
• Suck up, to get money from
• A sucker has one awash to have one for a sucker
• Light cake; sea creature
• Marine creature - cadge
• Piece of porous rubber
• Marine creature's scent found in most of ocean
• Spill absorber
• Despite being holed will hold water