Wading into the water along the rocky shore off Aramburu Island in Richardson Bay, Brian Cheng reached 3 feet under water and pulled up an algae-covered rock. “Here we go,” he yelled as he splashed ashore soaking wet and pointed out a tiny snail on the underside of the rock. “And, we got a bonus,” he said, gesturing toward a cluster of yellow gelatinous egg capsules.