Bubbles if you touch the image of your growing baby

Jenn • TTC 5 years and 6 Cycles for #1 . Unexplained infertility. All tests for DH and I are great. We are moving on to #IVF. Any advice welcome!

I'm trying to figure out why the image of your baby ( from cells to 9month) ....if you tap it bubbles come out and it bounces. What does that signify?