I'd never seen anything like these before. We found them halfway down the beach on Boundary Bay, at low tide. There were maybe a dozen separate trails, following the valleys between ripples in the sand.
|Either the end or the start of one trail. Central groove, paired footprints or claw prints on either side.|
|In looser sand, the footprints were less defined, the central groove deeper.|
|The groove is almost non-existent here.|
|Here's a hint. The shell at the end of this trail is about 1/2 an inch long. It appears to be empty.|
What do you think?
(I do know, because I found one track-maker. I'll post the answer tomorrow.)