https://www.pitara.com/tags/cephalopods/Recent content in Cephalopods on Pitara Kids NetworkHugoen-usSat, 13 Jun 2026 21:46:31 +0530https://www.pitara.com/science-for-kids/planet-earth-for-kids/a-fish-with-three-hearts-cuttlefish/Mon, 18 Mar 2002 05:06:42 +0000https://www.pitara.com/science-for-kids/planet-earth-for-kids/a-fish-with-three-hearts-cuttlefish/<p>It is said to be a royal among sea animals because it has blue blood, literally. And the cuttlefish has a large heart. Actually, it is not one but three hearts.</p> <p>And it is not even a fish but belongs to the same family as the squid and the octopus. They are called the cephalopods, which literally translated means head-foot.</p> <p>The blood of the cuttlefish is blue because of the huge amount of copper in it. While it uses two of its hearts to pump blood into the gills (the lung of the fish) where it absorbs oxygen, the third heart pumps blood into the other organs.</p>