Rei Ami, known for her singing voice in “KPop Demon Hunters,” recently faced real sharks during a dive. She was scared but also deeply moved by the experience. Viewers can watch her and hear a new K-pop song inspired by her shark encounter as Discovery Channel’s “Shark Week” begins Sunday. The event features 20 new shows exploring sharks, including a dive attempt into shark-infested waters. Actor Ken Jeong joins Rei Ami for the show “K-Pop Shark Heroes.” “Shark Week” aims to educate and entertain, dispelling myths about sharks. It runs for seven nights, ending Aug. 1.