Replying to @Denise A bubble study is basically an ultrasound trick where we inject tiny microbubbles into your IV to watch how blood flows through your heart. If the bubbles sneak across to the wrong side, it means there’s a hole—like a PFO or ASD—letting blood slip through the shortcut. #cardiology #echocardiography #doctorlife #medicaleducation #hearthealth | Zachary Meade

Baby’s first bubble-net feeding 🐋 Mother humpback whales teach their young how to corral prey into a tight ball by creating dual streams of strategically-placed bubbles, an ancient technique passed down through generations. | National Geographic Animals