Sea Gulls 
To dream of sea gulls signifies that you must let go of a troubling issue or concern.
Sea Horse
To dream of a sea horse signifies the strength of your instinct and intuition. It may also symbolize a change in perception or attitude.
If the sea horse is invisible, then it indicates that you need to face your personal concerns rather than trying to evade them. Perhaps you need to adopt a fresh approach to a situation.
Seal
To dream of a seal represents your good humor and ability to entertain others. It can indicate that you are proficient at integrating various notions and inspirations in certain circumstances. Seals indicate victory, triumph, and personal awareness. It also denotes wealth, loyal, devoted comrades, and confidence in a loving relationship. The dream may also represent the necessity to resolve a pending issue.
Shark
To dream of a shark symbolizes a ruthless and corrupt individual who is only concerned about himself and disregards the needs of others. The shark may also represent these same aspects of your own character. Perhaps you are experiencing a stage in your life of great distress and anguish. The shark represents harsh emotions such as rage, aggression, and violence. These feelings may harm the mental well-being of yourself and those around you.
Sheep
To dream of sheep suggests that you are afraid to embark on innovative endeavors and experience new adventures. You are perfectly comfortable remaining stationary and following the opinions or directions of others.
Shrimp
To dream of seeing or eating shrimp indicates that you harbor feelings of being inferior and unimportant. You want to detach yourself from others and be solitary for a period of time.
Skunk
To dream of a skunk implies that something you have said or done has caused others not to want to be around you. You are pushing them away or keeping them at a safe distance. It may also mean that an issue has been resolved but you are not comfortable with the resolution.
Snake
To dream of seeing or being bitten by a snake implies that you are afraid and anxious about some issue in your life. Perhaps this dream is suggesting that you should be aware of a pending situation that may cause you harm.
The snake can also represent the male genitals and may be warning you against entering into a certain sexual encounter. The snake can also represent someone in your life who is heartless, cruel, and treacherous. On a more optimistic note, the snake symbolizes intelligence, change, and understanding. It implies revitalization of the spirit and alterations in life.
Sniper
To dream that you are a sniper or are being attacked by one implies that you are harboring feelings of hostility that you should express rather than suppressing. These emotions should be communicated in a civil and positive way.
Sparrow
To dream of a sparrow symbolizes your self-respect and pride. Remember that you don't always have to be the strongest and most important in order to achieve your goals.
Squid
To dream of a squid implies that something or someone is causing you anxiety. Perhaps you are faced with a dangerous situation, or you may not be able to see the truth of a matter clearly. Your perception may be influenced or manipulated by someone else. It may represent self-indulgence and gluttony. Everything must be your way and you are unwilling to bend to the needs of others.
To dream that you are eating squid means that you are concerned about what other people think of you. You distance yourself from others so that they cannot form negative opinions of you. This indicates that you are feeling self-conscious and worried how others perceive you.
Squirrel
To dream of squirrels running around implies that an association you have with a significant other or a financial endeavor isn't giving you success or emotional fulfillment. Squirrels also symbolize collecting or accumulating something. Perhaps you should be collecting something. It may also mean that you are accumulating too much of something and you should get rid of it.
To dream that you are trying to run over squirrels with a lawn mower implies that you want to fit in with others. You believe that they will approve of you if you share the same opinions or perceptions.
To dream that you are feeding a squirrel indicates that you will receive satisfaction by using determination and persistence.
To see squirrels in a tree suggests that you may be the victim of a humiliating experience.
Stag
To dream of a stag symbolizes elegance and liveliness. You may have an opportunity to improve your reputation or social position. You will gain inner peace and satisfaction.
Stallion
To dream of a stallion represents control, intensity, valor, and liberty. If you are riding the stallion then it means that you possess or will possess these qualities.
Starfish
To dream of a starfish indicates that you need to revive yourself spiritually and emotionally. It may also mean that you need to assess a situation thoroughly before you come to a conclusion.
Stork
To dream of a stork indicates new life and productivity. Perhaps you have developed an innovative and creative notion.
Swan
To dream of a swan foretells of good fortune, status, and prosperity. Swans are symbolic of elegance, splendor, and majesty.
Tiger
To dream about a tiger symbolizes control and your aptitude at displaying it. It also could mean that you need to be commanding more often. Additionally, the tiger represents a woman's sensuality and pugnacity.
To dream about being attacked by a tiger indicates disturbing thoughts that you are holding back.
To dream about a tiger in a cage indicates that those feelings could soon be coming to the forefront.
Tortoise
To dream of a tortoise indicates a need to brave your chances in life. Some opportunities for progress may present itself, but you must take a bold step to prove yourself worthy of once-in-a-lifetime opportunity.
Trout
To dream of a trout means affluence and excess.
To dream that you are eating trout denotes your positive attitude towards life.
To dream that you caught a trout signifies happiness. If the fish falls back into the water, it means that it will be short-lived.