A stone with many holes

I seem to have a knack of coming across big pebbles on the beach that have holes worn right through them; have seen quite a few lately, and when I came across this one today, decided it was worthy of blipping because it looked so interesting. Well...interesting to me...but maybe I've been living near the sea for too long.

I took this while Megan was bounding in the sea; I did try to capture the madness of a wet Labrador, but she was just a bit too much for my camera to cope with today. Maybe next time!