Question

what do corals release into the surrounding waters during spawning?* dead polyps living polyps zooxanthellae sperm and eggs waste

Explanation:

Coral spawning is a reproductive process. During this, corals release gametes. Sperm and eggs are the reproductive cells (gametes) that corals release into the water for fertilization. Dead polyps would not be part of a spawning (reproductive) event. Living polyps are the coral structures themselves and not released during spawning. Zooxanthellae are symbiotic algae within corals, not released during spawning. Waste is a by - product of normal metabolism, not related to spawning.

Answer:

sperm and eggs