Click on image to view larger version.

Fig. 4. Typical dives at (A) Big Razorback Island, with a gradual slope, and (B)
Turks Head, with a steep slope. The x-axis is time, swimming speed is
in red, and dive depth is in black; the black dots over the green lines
represent strokes recorded as swaying acceleration, and the vertical dashed
lines delineate the separation of the dive into three phases: descent, bottom
and ascent. Swimming behavior is categorized as continuous stroking (black
horizontal bar), stroke-and-glide swimming (grey horizontal bar) and prolonged
gliding (open horizontal bar). Blue lines represent the body angle calculated
from surging acceleration.