Biology

Size

Proisocrinus ruberrimus has a fan-like crown of arms supported by a stalk.

In adults:

  • crown length is 11-17cm
  • stalk length is 65-84cm

Growth

Proisocrinus ruberrimus

  • grows continuously throughout its lifetime
  • possesses the ability to re-grow its arms and even the entire stalk

Life expectancy

Proisocrinus ruberrimus probably lives for several years. Some crinoids are thought to live for over 10 years.

Dispersal

Dispersal is via a zooplanktonic larval stage. It is possible that adults are also capable of limited mobility.

  • Reproduction and lifecycle

    Proisocrinus ruberrimus occurs as both male and female individuals. Learn how and when reproduction takes place and about the various developmental stages of this stalked crinoid.