Figure 3. The first 10 in Chronic stress from fishing gear entanglement is recorded in baleen from a bowhead whale (Balaena mysticetus)

Figure 3. The first 10 cm of the baleen plate from bowhead whale 17B6 showing a measuring tape attached to the labial margin of the plate to guide sampling intervals. Samples were drilled every 1.25 cm (~26 d intervals) across the horizontal growth lines along the plate for the first 35 cm of growth to maximize the possibility of capturing data on the entanglement event from more recent baleen growth, and every 2.5 cm (~52 d intervals) for the reminder of the plate to establish baseline levels of GCs prior to the entanglement. Samples were collected using a hand-held Dremel rotary tool to produce pulverized baleen powder for glucocorticoid hormone analysis.