Cuttlefish | Wikipedia audio article
Channel: wikipedia tts
Date: 2018-12-10

This is an audio version of the Wikipedia Article:
Cuttlefish


00:01:32 1 Fossil record
00:01:53 2 Range and habitat
00:03:22 3 Anatomy and physiology
00:03:32 3.1 Visual system
00:04:47 3.2 Circulatory system
00:05:34 3.3 Cuttlebone
00:06:21 3.4 Specialized components
00:06:30 3.4.1 Ink
00:07:32 3.4.2 Suckers and venom
00:08:14 4 Reproduction
00:09:53 5 Communication
00:10:46 5.1 Chromatic
00:12:31 5.1.1 Chromatophores
00:14:09 5.1.2 Iridophores
00:15:58 5.1.3 Leucophores
00:16:50 5.2 Intraspecific communication
00:18:21 5.3 Interspecific communication
00:19:10 5.3.1 Camouflage
00:20:51 6 Diet
00:21:37 7 Taxonomy
00:22:41 8 Human uses
00:22:51 8.1 As food
00:24:07 8.2 Sepia
00:24:24 8.3 Metal casting
00:24:45 8.4 Smart clothing
00:25:17 8.5 As pets
00:25:35 9 See also



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SUMMARY
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Cuttlefish or cuttles are marine animals of the order Sepiida. They belong to the class Cephalopoda, which also includes squid, octopuses, and nautiluses. Cuttlefish have a unique internal shell, the cuttlebone. Despite their name, cuttlefish are not fish but molluscs.
Cuttlefish have large, W-shaped pupils, eight arms, and two tentacles furnished with denticulated suckers, with which they secure their prey. They generally range in size from 15 to 25 cm (6 to 10 in), with the largest species, Sepia apama, reaching 50 cm (20 in) in mantle length and over 10.5 kg (23 lb) in mass.Cuttlefish eat small molluscs, crabs, shrimp, fish, octopus, worms, and other cuttlefish. Their predators include dolphins, sharks, fish, seals, seabirds, and other cuttlefish. The average life expectancy of a cuttlefish is about 1–2 years. Recent studies indicate cuttlefish are among the most intelligent invertebrates. Cuttlefish also have one of the largest brain-to-body size ratios of all invertebrates.The "cuttle" in cuttlefish comes from the Old English name for the species, cudele, which may be cognate with the Old Norse koddi (cushion) and the Middle Low German Kudel (rag). The Greco-Roman world valued the cuttlefish as a source of the unique brown pigment the creature releases from its siphon when it is alarmed. The word for it in both Greek and Latin, sepia, now refers to the reddish-brown color sepia in English.