Others have provided details about how it works. I suggest zooming way in on that image and you'll start 'breaking though' the surface and that'll help you get an idea of how it works. Important thing is there is no defined geometric surface ("mesh"). Also important to know is that it's very, very hard to get a good splat without taking a ton of photos at different angles. It's also really, really easy to create a crappy looking splat. But when it's done right, it's a marvel

Lots of translucent blobs composited to produce the appearance of a strawberry.

There is no mesh or model. The visual surface of the strawberry could be made up of blobs spaced far apart physically and not where the surface appears to be.

This is why they are called radiance fields, they model the light not the geometry.

Practically the blobs positions/rotations can be constrained to better physically match the geometry of a strawberry.

https://youtube.com/watch?v=X8yRlA7jqEQ is how I learned about them. They're really cool!

Here’s a good 2 minute explainer https://youtu.be/HVv_IQKlafQ

This video explains how Gaussian splatting works: https://www.youtube.com/watch?v=X8yRlA7jqEQ