Graph Databases

The animal on the cover of Graph Databases is a European octopus (Eledone cirrhosa),also known as a lesser octopus or horned octopus. The European octopus is native tothe rocky coasts of Ireland and England, but can also be found in the Atlantic Ocean,North Sea, and Mediterranean Sea. It mainly resides in depths of 10 to 15 meters, buthas been noted as far down as 800 meters. Its identifying features include its reddishorangecolor, white underside, granulations on its skin, and ovoid mantle. The European octopus eats primarily crabs and other crustaceans. Many fisheries in theMediterranean and North Seas often unintentionally catch the European octopus. Thespecies is not subject to stock assessment or quota control, so they can be consumed. However, their population has increased in these areas in recent years due in part to theoverfishing of larger predatory fish.

The European octopus can grow to be between 12 and 40 centimeters, which it reachesin about one year. It has a relatively short life span of less than five years. Compared tothe octopus vulgaris (or common octopus), the European octopus breeds at a muchlower rate, laying on average 1,000 to 5,000 eggs. The cover image is from Dover Pictorial Archive. The cover font is Adobe ITC Garamond. The text font is Adobe Minion Pro; the heading font is Adobe Myriad Condensed;and the code font is Dalton Maag’s Ubuntu Mono.