What cranial adaptation facilitates the yellow anaconda's underwater ambush style?
Answer
Eyes and nostrils situated dorsally on the head
A key physical adaptation suited for the yellow anaconda's ambush predatory lifestyle centered in aquatic environments is the dorsal placement of its sensory organs. Both the eyes and the nostrils are situated on the top surface of the head. This strategic positioning allows the snake to remain almost completely submerged beneath the water, breaking only the surface line with these features. This enables the snake to maintain concealment while simultaneously observing potential prey or taking necessary breaths.
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