Claire. Posted July 10, 2017 #1 Share Posted July 10, 2017 Meet the only animal known to pump blood with its guts High school biology classes teach us that the circulatory system pumps blood and the digestive system pumps food. But sea spiders apparently skipped that lesson: They pump blood using their guts. Read more: ScienceMag.org Link to comment Share on other sites More sharing options...
DebDandelion Posted July 12, 2017 #2 Share Posted July 12, 2017 Interesting read! 1 Link to comment Share on other sites More sharing options...
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