Assertion: seahorse | /r/CapableOf | jerk its head
Facets:
value: upward
type: MANNER
Source sentences:
text: In order to ambush its prey, the seahorse employs color changes to camouflage itself with its surrounding environment, locates the prey, and then jerks its head upward, forcing the prey in the right position to be sucked in through its tubular snout.