Common minke whale to 20 growth layers in their tympanic bullae, which may correspond to about 15 to 20 years of age. Both sexes can live to about 50 years of age – the oldest in a study of Icelandic minke whales were 42 years for females and 47 years for males, respectively. Common minke whales have been described as ichthyophagous, but their diet also includes pelagic crustaceans and cephalopods and varies by region, season, and year. In the North Atlantic, they primarily eat small schooling fish, demersal fish, and krill. A 2007 study showed that off Spitsbergen they fed almost exclusively on
Creature type (Dungeons & Dragons) a change to an animal creature that increases its Intelligence or grants it additional abilities, the designer is encouraged to also change the creature's type, usually from animal to magical beast. When real world animals are rendered as vermin (see below) in D&D, they have no Intelligence scores at all. In 3rd edition, the beast type was used for nonhistoric and fantastic, but not necessarily magical vertebrates. The beast type was merged into the animal type in 3.5 edition. A construct is either an animated object of some sort, or an artificially crafted creature. Most construct are mindless automatons, obeying