Snorkeling is a low-impact form of exercise that can be safe to do during pregnancy with some considerations. 

It can feel good to be in the water during pregnancy, as the buoyancy can help relieve weight and pressure on your joints, and hydrostatic pressure can help reduce the swelling in your legs and feet. ¹ 

If you’ve noticed increased fatigue or shortness of breath, be sure to avoid holding your breath and take frequent breaks. Keep in mind that it can be easy to drift further than you realize depending on currents and wind, so use a well-fitting flotation device to avoid fatigue. While you do have decreased risk of overheating in the water ² , continue to stay hydrated and be mindful of outside temperatures. 

Although snorkeling is generally safe in pregnancy, have a conversation with your healthcare provider on whether snorkeling is appropriate for you. Scuba diving should be avoided due to risk of malformation and decompression disease ³ for your baby.