Final answer:
Perhentian Besar is renowned for its captivating coral reefs and abundant marine life, attracting tourists interested in diving and water sports.
Step-by-step explanation:
Perhentian Besar is a noteworthy tourist attraction primarily because of its coral reefs and marine life. This tropical destination is a part of Malaysia, which is known for lush coastal plains, forested foothills, and vibrant marine biodiversity. Perhentian Besar, like many beach and marine attractions such as the Great Barrier Reef in Australia, provides opportunities for diving and water sports because of its stunning underwater scenery, making it a paradise for those interested in exploring the vibrant life underneath the sea surface.