Haplorhini is a suborder of primates that includes monkeys, apes, and humans. These animals are characterized by their dry noses and more advanced brain structures compared to their counterparts, the Strepsirrhini. Haplorhines are typically more active during the day and have a greater reliance on vision than on smell. Within the Haplorhini suborder, there are two main groups: Tarsiiformes, which includes tarsiers, and Simiiformes, which encompasses monkeys and apes. This diverse group of primates exhibits a wide range of behaviors and adaptations, making them fascinating subjects for study in fields like anthropology and evolutionary biology.