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An octopus (pl.: octopuses or ... Diagram of octopus from side, with gills, funnel, eye, ocellus (eyespot), ... Octopuses have three hearts; a systemic or main heart ...
The octopus has three hearts, one main two-chambered heart charged with sending oxygenated blood to the body and two smaller branchial hearts, one next to each set of gills. The circulatory circuit sends oxygenated blood from the gills to the atrium of the systemic heart, then to its ventricle which pumps this blood to the rest of the body.
Branchial hearts are accessory pumps that supplement the action of the systemic heart in a cephalopod's body. They are myogenic in nature. [1] Branchial hearts are always in pairs located at the base of the gills. Each branchial heart consists of a single chamber. [1] [2] They pump blood through the gills via the afferent branchial veins.
Octopuses are incredibly intelligent, displaying all kinds of amazing behavior like completing puzzles, opening jars, and escaping from aquariums. Recently, scientists have witnessed a species of ...
All octopuses [24] and most cephalopods [25] [26] are considered to be color blind. Coleoid cephalopods (octopus, squid, cuttlefish) have a single photoreceptor type and lack the ability to determine color by comparing detected photon intensity across multiple spectral channels.
Cuttlefish eat small molluscs, crabs, shrimp, fish, octopuses, worms, and other cuttlefish. Their predators include dolphins, larger fish (including sharks), seals, seabirds, and other cuttlefish. The typical life expectancy of a cuttlefish is about 1–2 years. Studies are said to indicate cuttlefish to be among the most intelligent ...
The Toniebox has been selling like mad this year. It's an audio player for kids that can play stories, podcasts, and songs. Each box comes with a character — a "Tonie" — whose audio matches ...
SEE ALSO: Mother horrified after learning what heart symbol on daughter's stuffed toy really meant A FBI document obtained by Wikileaks details the symbols and logos used by pedophiles to identify ...