I love capturing movement in water. I find it to be very challenging and I'll take numerous photos just to get the one I want! For this photo, I tried something I saw on Facebook. I filled up a water balloon and put a pair of sunglasses on the balloon so that it looked like a face. I used a pushpin attached to the end of a stick to burst the balloon with the hopes of capturing the burst with the sunglasses in tact and before the water dispersed. It's a lot of fun (but messy)!
If you're going to try to isolate the movement of a liquid today there are a few things to remember. Use a high shutter speed. The higher SS you use, the better chance you have of freezing the movement and obtaining a crisp photo. If you can, use a tripod so that your camera remains still while shooting and set it to burst mode. This helps ensure you are able to capture the exact moment you're looking for.
Have fun playing with liquid today, even if it's just a photo of your morning coffee!