Alright kiddo, have you ever played with ice cubes or watched them melt in a drink? Well, ice calving is like that, but on a much bigger scale. Imagine a really, really big ice cube floating in the ocean. Sometimes little pieces of the ice cube break off and fall into the water below. That's called ice calving.
It happens when the ice on the edges or bottom of the ice cube melts or breaks away from the rest of the ice. This can be caused by things like warm air, ocean currents, or even the movement of the ice itself. When the ice falls into the water, it creates a big splash and sometimes even a big wave.
Now, some ice cubes are much bigger than others. In fact, some are as big as a city or even a whole country! These big ice cubes are called ice shelves, and they can have ice calving too. When a big piece of an ice shelf breaks off, it's called an iceberg. Sometimes these icebergs can be so big that they can even cause problems for ships that are sailing nearby.
So that's ice calving for you, kiddo. It's like when little pieces of an ice cube break off and fall into the water below, but on a much bigger scale with huge ice shelves and icebergs. Cool, huh?