Crown-of-thorns starfish
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The crown-of-thorns starfish is a large starfish that preys upon hard coral polyps. The crown-of-thorns starfish, frequently abbreviated to COTS, receives its name from venomous, thornlike spines that
Acanthaster planci 460468243
In Thailand
Short-spined form from Gulf of California – live specimen
Broken and regenerating spines
Sodium bisulfate
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Sodium bisulfate, also known as sodium hydrogen sulfate, is the sodium salt of the bisulfate anion, with the molecular formula NaHSO4. Sodium bisulfate is an acid salt formed by partial neutralization
Crown-of-thorns starfish
…habitats, humans have implemented a variety of control measures. Manual removals have been successful, but are relatively labour-intensive. Injecting sodium bisulfate into the starfish is the most efficient measure in practice. Sodium bisulfate is deadly to crown-of-thorns, but it does not harm the surrounding reef…
Sodium bisulfate, as a white powder, turns indicator paper red.