<p><strong>SF Fig. 2.6.</strong>&nbsp;(<strong>B</strong>) A diver gently removes alien algae from the reef and uses the Super Sucker vacuum to suck algae from the water.</p>

SF Fig. 2.6. (B) A diver gently removes alien algae from the reef and uses the Super Sucker vacuum to suck algae from the water.

Image courtesy of State of Hawaiʻi Division of Aquatic Resources (DAR)