What’s with the mirrored swim goggles?

2. What’s with the hot tub after diving?

3. What’s with the two swim caps?

4. What’s with the different-colored volleyball jersey?

5. What’s with those protrusions on the side of water polo players’ caps?

6. What’s with the women’s beach volleyball players being so covered up?

7. What’s with that bright body tape?

8. What’s with the purple puff of smoke at shooting matches?