Bombardment

The original plan was that the operation was to be a purely Naval affair. From the 19th of February, the Royal Navy began bombarding the forts along the coastline and within the inlets. All day long they bombarded the forts assuming that they were inflicting substantial damage. However, when the ships moved closer to inspect the damage they found that the Turkish gunners fired back indicating that they had not been destroyed.
Inclement weather disrupted operations, but the fleet continued to bring fire down on the forts for another month in total.
Original illustration published by H W Wilson, British journalist and naval historian, editor of The Great War: The Standard History of the All-Europe Conflict,

The Gallipoli Campaign