Getting To Work
After I conquered my nosebleeds it was finally time to get in the water and start diving. After I completed my Advanced Open Water certification (without incident, hooray!) and mastered all the fish species I needed to learn I could finally start performing...wait for it...fish surveys! What is a fish survey you ask. It's a way of sampling the reef for fish abundance, size distribution and diversity and used as an indicator of reef health. So first we roll out a transect line in one direction and then swimming along the tape measure we mark down how many of each type of fish we see, and mark the appropriate size range each fish fits into. Like this We continue to swim in one direction to minimize the possibility of counting the same fish twice, until we reach the end of the 30m tape, at which point we turn around and start counting juveniles. The purpose of this is that juveniles are much smaller and generally more abundant, and can look quite different than mature adult...