Dodatak:Popis bodljikaša, I

Ic

Icasterias Fisher, 1923

1. Icasterias panopla (Stuxberg, 1879)

Echinodermata → Asteroidea → Forcipulatida → Asteriidae

Iconaster Sladen, 1889

1. Iconaster elegans Jangoux, 1981
2. Iconaster longimanus (Möbius, 1859)
3. Iconaster uchelbeluuensis Mah, 2005
4. Iconaster vanuatuensis Mah, 2005

Echinodermata → Asteroidea → Valvatida → Goniasteridae

Ih

Iheringiella Berg, 1898 †

Echinodermata → Echinoidea → Clypeasteroida → Scutellina → Scutellina incertae sedis

In

Indianastra O'Loughlin in O'Loughlin & Waters, 2004

1. Indianastra inopinata (Livingstone, 1933)
2. Indianastra sarasini (deLoriol, 1897)

Echinodermata → Asteroidea → Valvatida → Asterinidae

Ir

Irpa Danielssen & Koren, 1878

1. Irpa abyssicola Danielssen & Koren, 1879

Echinodermata → Holothuroidea → Elasipodida → Elpidiidae

Is

Red Isocrinida

• Podred Isocrinina
• Podred Pentacrinitina †

Echinodermata → Crinoidea → Articulata

Isopatagus Mortensen, 1948

• Isopatagus obovatus Mortensen, 1948

Echinodermata → Echinoidea → Spatangoida → Micrasteridae → Cyclasterinae , Isostichopus