This paragraph develops the characters in the dialogue by showing that Adam is afraid of what is in the water, but Laura is fearless and likes to tease him.
This text is providing characterization by telling the reader how differently the two characters react to their environment in a narrative of events.
Adam is shown as fearful through indirect characterization:
- "stepped ... carefully;"
- "winced;"
- "nearly screamed."
On the other hand, Laura is directly described by the narrator as someone who "wasn't afraid of anything." Other hints from the text signal to the reader that she is enthusiastic and adventurous:
- "She was the type to dive off a cliff and not even think about what was in the water below;"
- "it’s so cool!"
Her "scooping a crab into her hand" and bringing it closer to her face is what is interpreted by the narrator as teasing, because Laura is gently mocking his fears by showing how close you can get to what Adam perceives as a danger.