What percentage of the volcano snail total body volume is occupied by its heart?
Answer
4 percent
The heart of the volcano snail is disproportionately large, making up approximately 4 percent of its total body volume. This massive size is an essential adaptation to support high metabolic demands, specifically the need to pump blood to the enlarged respiratory organs and the esophageal gland, where symbiotic bacteria reside. This volume is significantly higher than that of many other animals, reflecting the organism's specialized reliance on internal symbiosis.
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