Oxygen Mask 
Wearing an oxygen mask in a dream indicates that you need protection from outside influence. You may be concerned that your environment is causing you pain.
Alternatively, an oxygen mask may symbolize a need for freedom. You need to get out of a stifling atmosphere and express yourself.
Sand Dollar
A sand dollar in a dream symbolizes good luck and prosperity.
Beach House
Dreaming of a beach house indicates your desire for more relaxation, specifically a secluded place to go for peace and relaxation.
Killer Whale
A killer whale in a dream represents spiritual guidance. The killer whale is a dangerous animal which in a dream represents a part of your psyche which has great power but which must be followed carefully.
Water Carrier
The water carrier is a symbol of great bounty. A large fortune or true love is in your future. If you are carrying the water, you will soon rise above your station. Great reward will soon be yours.
Hammerhead shark
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.