Marine Life Hand Signals for Underwater Communication
- Shark: hold the side of your hand against your forehead.
- Hammerhead: place your fists on either side of your head.
- Turtle: place one hand on top of the other and rotate your thumbs.
- Manta ray: flap both of your arms like you’re flying.
What is hand signals in underwater?
Commonly used underwater hand signals are the “thumbs up/down” (Photo 2) to indicate you are ready to initiate a descent or ascent. (It’s important to note that outside of the diving world, the “thumbs up” sign usually indicates, “I’m okay” or “good. Here, it’s, “Let’s go up/down now.”)
What does a fist mean in diving?
”Low on Air”
How to do it: Hold a closed fist against your chest. While it’s not normally used to indicate an emergency, the “Low on Air” signal is an important one as it helps you inform other divers that you have started using up your tank pressure reserve.
What does thumbs up mean in diving?
A thumbs-up sign communicates “up” or “end the dive.” The “up” signal is one of the most important signals in scuba diving. Any diver can end the dive at any point for any reason by using the “up” signal. This important dive safety rule ensures divers are not forced beyond their comfort level underwater.
What are the hand signals for scuba diving? – Related Questions
What are the 4 diving position?
Diving positions for platform and springboard diving are based on four distinct shapes. These are straight, pike, tuck, and free.
What does a fist in the air mean in the military?
“When you put your hand up in the air with a closed fist, in the Marines it means you want them to stop,” he said. “ But, as we later learned, it’s actually the international sign of solidarity.
Why do divers flatten their hands?
This technique derives its name from the position of the hands: The palms of the hands face-up above the head, creating a “flat” or level surface. Essentially, the point of the flat-hand grab is to create a cavity in the water for the diver to pass through.
Why do divers wrap their wrists?
The most common one you’ll see at the Olympics is wrist guards. In a TikTok from USA Diving, 10-meter diver Brandon Loschiavo explained that he wears wrists guards to prevent his wrists from going “too far back,” adding that without them, he could run the risk of a developing a serious injury, like a fracture.
What is the dive signal for something is wrong?
3 – Something is wrong
Extend the flattened hand, palm down, out in front of you and tilt it side to side on the forearm axis to indicate to your diving buddies that something is wrong. This hand signal can be combined with any number of other hand signals to tell your fellow divers exactly what is wrong.
What is a failed dive called?
A balk is declared by the referee and causes a deduction of two points per judge. If the diver balks again or falls into the water, the referee declares a failed dive.
Why do divers tap top of their heads?
Mouthpiece tapping – requesting air to be shared. Ear pointing and hand cupped behind ear – asking for another diver to listen. Flat hand sweeping over top of head – indicating a solid decompression ceiling overhead. Moving hand across the body in a wave motion – signifying a current.
Why are 4 scores crossed out in diving?
Why are some scores crossed out in diving? The highest two scores and the lowest two scores are crossed out. These scores are discarded to help prevent any manipulation of scores from the judge’s side. This then allows a more objective point of view on the scores and can discard any outliers.
What color do you lose first diving?
Red is the first to be absorbed, followed by orange & yellow. The colors disappear underwater in the same order as they appear in the color spectrum. Even water at 5ft depth will have a noticeable loss of red. For this reason, strobes are usually used to add color back to subjects.
Why do divers roll off backwards?
A backward roll protects your boat from excessive rocking. Any other dive typically causes a boat to rock unsteadily, which could cause other divers to fall as they’re preparing to dive. Your gear could also be damaged, particularly your mask and fins.
What is the most important rule of diving?
1. Never hold your breath. This is undoubtedly by far the most crucial of all safety rules for diving because failure to adhere could result in fatality. If you hold your breath underwater at the depths at which scuba divers reach then the fluctuating pressure of air in your lungs can rupture the lung walls.
What should you never do while scuba diving?
Never hold your breath while ascending. Your ascent should be slow and your breathing should be normal. Never panic under water. If you become confused or afraid during a dive, stop, try to relax, and think through the problem.
What should you not do after scuba diving?
8 Things You Should Never Do Immediately After Diving
- Flying After Diving. Flying after scuba diving is one of the more widely known risks to divers.
- Mountain Climbing.
- Ziplining After Diving.
- Deep Tissue Massage.
- Relaxing in a Hot Tub.
- Excessive Drinking.
- Freediving After Scuba Diving.
Who should not do scuba diving?
If you have any of these or other illnesses, which might cause similar problems, consult a doctor before diving.It is not recommended for people with the following conditions to scuba dive: People with breathing problems. People with ear problems or people who have had ear surgery in the last 12 months.