And it's incredible to watch, but there's nothing psychic or paranormal going on; it's simply that these crabs have internal cycles that correspond, usually, with what's going on around it.
Og det er utroligt at se på, men der foregår ikke noget synsk eller overnaturligt; det er simpelthen det at disse krabber har interne cyklusser der passer sammen, sædvanligvis, med det der sker omkring dem.