A thin white ribbed Paper Nautilus shell covered in small nodules on the ridges of the shell. A shell made by a female knobbed argonaut argonauta nodosa octopus to protect her eggs. Produced from a thin horn like secretion from two tentacles. These shells can be found on Mayor Island, Bay of Plenty, New Zealand as well as South America and South Africa.
The Cask or Tun shell (Tonna Variegata) is a large rounded univalve pale yellow in colour with brown spots. Inside the shell is yellow and glossy. Live shells have been found on Matakana Island and have been picked up on Mt Maunganui beaches.
maker: Knobbed Argonaut Octopus
maximum dimension: 120mm
subject area: Social Science, Science
subject themes: Sea, Environment, Shell, Mount Maunganui, Matakana Island, Mayor Island
handling collection number: HC117/1-2
why not get your hands on these... Collection of New Zealand Shells HC113