What anatomical feature is relatively small and slightly flattened on the head of *P. platura* compared to its body structure?
Answer
The head itself, often appearing distinct from the neck region.
The head structure of the Yellow-bellied Sea Snake is characterized by being relatively small in proportion to its elongated, slender body. Furthermore, it is described as being slightly flattened, creating a visual distinction from the subsequent neck area. This morphology is complemented by proportionally small eyes, indicating that while it possesses the cranial structure necessary for land-adapted snakes, its sensory focus has shifted away from high-resolution vision typical of terrestrial counterparts.

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