Complex sentence: In this case, the orcas turn themselves upside down before attacking, trap the stingrays in their mouths, then quickly right themselves, in turn flipping the stingray over, inducing the tonic immobility, rendering the fish helpless and an easy meal.
Split into simpler sentences: In this case, the orcas turn themselves upside down before attacking, trap the stingrays in their mouths then quickly right themselves. This inverts the stingray thereby inducing TI, rendering the fish helpless and an easy meal.