Can you provide your yellow bellied slider with sunlight only?

While yellow-bellied sliders do benefit from sunlight, it's not advisable to provide them with sunlight alone. They require a balanced environment that includes both UVB lighting and a heat source, as well as water for swimming and basking areas. Natural sunlight can be beneficial, but it should be supplemented with proper artificial lighting to ensure they receive the necessary UVB radiation and warmth year-round.