Possible Clues:

• *Athlete's time-out on a hot day
• Barrier against the force of waves
• Barrier against erosion
• Grasping tail in dark, beware rat that's mistaken for mole
• Rest on quality item on beach
• A feature of a seaside holiday with rain?
• Mole's holiday by river?
• Mole takes holiday by lake perhaps
• Mole's opportunity to engage at first in combat
• Mole's period of relaxation on river?