Fig. 4From: Lab and field evaluation of tagging methods for the use of acoustic telemetry to observe sea urchin movement behaviour at ecologically relevant spatio-temporal scalesa Tag retention and b survival probabilities for tagging methods. Results shown are fitted survival models (with 95% profiled confidence intervals). Vertical black dashed line shows the median Kaplan–Meier value (when 50% of urchins have lost their tag or died) for the single tagging method where more than 50% of urchins lost their tag (NS—a) or died (TB—b)Back to article page