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• Aquatic activities

  Water or aqua has a certain unique attraction to people of all ages
• Water is a colorless transparent odorless liquid that forms the seas, lakes, rivers and rain and is the basis of the fluids of living organisms
• Aqua


  Relates to water sports of aquatic entertainment, it is also considered a color, it describes a mixture of blue and green
• Properties of water

  • Relative Density
  • Buoyancy
  • Hydrostatic pressure
  • Viscosity
  • Cohesion
• Where aquatic activities may be done

  • In water
  • On water
  • Under water
• Snorkeling


  Peeking through life underneath water by swimming with the aid or snorkel and mask
• History of snorkeling

  • Hollow Reed (3000 B.C.)
  • Animal Skins (9000 B.C.)
  • Diving Bell (300 B.C.)
  • Eye Goggle from Shells of Tortoise (1300s)
  • Sketch of Webbed Swimming Gloves (1400s)
  • Wooden Paddles (1717)
  • Modern Fins (1912)
• Basic equipment for snorkeling

  • Mask
  • Snorkel
  • Snorkeling Fins
  • Snorkel Vests
  • Skin Protection
  • Swimming Cap
  • Mask Defogger
• How is snorkeling done?

  1. Test and practice

  2. Floating position

  3. Kicking move

  4. Diving deeper
• Important things to remember while snorkeling

  • Stay close to the shore if you are a beginner
  • Never do it alone
  • One up, one down
  • Rain check
  • Know your surroundings
  • Energy retention
  • Leave them alone
• SCUBA diving

  Self Contained Underwater Breathing Apparatus
• SCUBA diving gear

  • Air Tanks
  • Mask
  • Fins
  • Wetsuit
• Types of SCUBA diving

  • Open water diving
  • Deep diving
  • Drift diving
  • Wall diving
  • Night diving
  • Wreck diving
  • Ice diving
• relative density (i.e.,specific gravity) of a substance affects its ability to float.
• bouyancy perhaps the most important property to understand, for it has the ability to either assist or resist motion in the water.
• Hydrostatic pressure is horizontal pressure that is exerted on the entire body when it is immersed in water
• Viscosity is the amount of friction acting on a moving part in water.
• Cohesion is the tendency of water molecules to stick to each other.
• Skin divers of the island Crete in the Mediterranean used hollow reeds to breathe while submerged in water as they collected sponges.
• An ancient bas-relief dating 9000 B.C. Depicted divers in Assyria using animal skin filled with air to lengthen their stay underwater
• Mask serves as the viewing device in appreciating the world beneath the water. Without the mask everything viewed underwater will be blurred or distorted.
• • Parts of mask: 
  • head strap, 
  • skirt, 
  • lens
  • nosepocket
• Snorkel Is a piece of equipment that makes it possible to breathe at the surface while the face is submerged in water
• Parts of snorkel: 

  • dry valve or splash guard
  • mask strap clip
  • mouth piece
  • purge valve
  • flex tube
• Types of snorkel:

  • Classic Snorkel 
  • Snorkel with Flexible Tube
• Speed and efficiency in swimming are what one gains in wearing snorkeling fins.
• Types of Fins:

  • Full Foot Fin 
  • Adjustable Fin
  • Split Fins
  • Paddle Fins
• Snorkel vests are small and inflatable, which provide more buoyancy while floating on water.
• In order to protect the skin from the heat of the sun, one may use sunscreen or a better choice will be wearing a long sleeve such as a rash guard as a skin protection
• swimming cap is a big help in keeping hair out of snorkel and the face as well. It will help in preventing the scalp from burning on a sunny day.
• Mask defogger helps prevent the mask from fogging up.
• AIR TANKS are filled with two different types of air. There is normal air, which is most commonly used. Or the enriched air, commonly known as nitrox is used because it has a higher oxygen level and lower nitrogen level than normal air. This allows divers to stay at any given depth (cannot exceed 110 feet) for longer amounts of time.
• Compressed air is needed because as the pressure on the outside increases the pressure of the inhaled breath must balance the ambient pressure to allow inflation of the lungs.
• MASK designed for scuba diving, that can withstand the underwater pressure. It allows scuba divers to see clearly whilst underwater. Another important feature of scuba mask is that it encloses a divers nose, allowing the diver to equalize the pressure in the mask so it doesn't suction painfully onto their face.
• FINS or flippers allow scuba divers to move more swiftly and efficiently underwater with the least amount of effort possible. This means using less air, and prolonging drive time.
• wetsuit main purpose is to keep the scuba diver warm while they are diving.
• OPEN WATER DIVING refers to scuba diving in an expansive body of water away from the shore or any obstruction.
• Compressed air is needed because as the pressure on the outside increases the pressure of the inhaled breath must balance the ambient pressure to allow inflation of the lungs.
• DEEP DIVING adventurous divers with the opportunity to explore exciting new areas and expand their scuba diving abilities. Deep diving refers to dives that exceeds 18 meters or around 59 feet. As such professionals do not recommend diving for inexperienced divers
• DRIFT DIVING is a type of dive where the water’s tide or current transports the divers to a different location than where they began their dive; essentially drift diving is simply going with the flow.