To dream of eating sardines indicates that you are unafraid of what others think of you.
To dream of an admiral indicates a desire to command or lead a group of people, either socially or in a professional setting through a difficult or trying task. An important aspect of this desire is the need to be respected, recognized and awarded for your leadership and courage.
Dreaming of a hammerhead shark denotes your fear of an enemy or danger. While fish and dolphins are beneficial and positive images to see in a dream, sharks in general represent all things greedy and cold. Regularly dreaming of a hammerhead shark means that there is someone in your life who may be deceiving you in some way. They are not being completely honest with you.