When 100mL of HCl are added, the pH of the solution will equal 7. Bromthymol Blue, an indicator which changes color in the 6-8 pH range is used in this case, because we can see when the pH is equal to 7.
Firstly, you have more chance of getting hit by a car or killed by a coconut falling on your head than getting attacked by a shark. A shark isn't going to pick you by what colour your boogie board is. Usually they attack people who have just gone to the toilet or are simply the unlucky ones. I think Mythbusters found that sharks are not attracted to certain colours but they tend to bite the colour yellow more once they do attack.
Sand Tiger Shark Visitors react strongly to this shark! Large in size and with a mouthful of protruding spike-like teeth, this shark, like the great white shark, is the image that most people picture when they think of sharks. The sand tiger sharkâs snout is narrow and flattened, the two dorsal fins and the anal fin are similar in size, and the upper lobe of the tail is much longer than the lower lobe and has a deep notch near the end. The adultâs body is light brown to gray above and paler below.