2. Seen hauled up on rocky islands (4,4) 3. Giant plankton eaters (7,6) 6. Can be found on sandy dunes (10,4) 9. Parasitical fish (7) 11. Monks and royalty fed on these (7,4) 14. Astern, person moving through water (4,6) 16. Largest bivalve mollusc in british waters (4,6) 18.Protected species found in R.Kent (5,6,8)