Kalu Kalu!

It's mechanical, and somewhat crab-like, but it's behaving unlike the other ones that look very similar to it... It's not about to attack you. In fact, it's a bit surprised to have noticed you--not in any aggressive manner whatsoever.

In fact, it seems to be carrying some small metal components in its metallic "pincers", or "claws.". It's got its fore limbs full of those parts, and isn't about to drop them.