Crinoids are marine invertebrates that make up the class Crinoidea. Crinoids that remain attached to the sea floor by a stalk in their adult form are commonly called sea lilies, while the unstalked forms, called feather stars[3][4] or comatulids, are members of …

sea lily, any crinoid marine invertebrate animal (class Crinoidea, phylum Echinodermata) in which the adult is fixed to the sea bottom by a stalk. Other crinoids (such as feather stars) resemble sea lilies; however, they lack a stalk and can move from place to place.

Known as sea lilies for their beautiful, feathered arms, these creatures are cousins of modern sea stars and sea urchins. When they grew in dense groups they created a protected, diverse ecosystem for other creatures to call home.

The Sea Lily is a class of marine invertebrate animals that are attached to the seafloor by a stalk. They are of the class Crinoidea, otherwise known as a crinoid. These feathery creatures are part of the phylum Echinodermata. Some of the other marine creatures in this phylum are Sea Cucumbers and Sea Urchins.

2025年1月2日 · crinoid, any marine invertebrate of the class Crinoidea (phylum Echinodermata) usually possessing a somewhat cup-shaped body and five or more flexible and active arms. The arms, edged with feathery projections (pinnules), contain the reproductive organs and carry numerous tube feet with sensory functions.

2025年1月10日 · Explore what sea lilies or Crinoids are, their features, reproduction and natural habitats. Uncover stunning examples and learn how they thrive in the deep sea.

2018年5月29日 · sea lily, stalked echinoderm of the class Crinoidea. Sea lilies are ancient, having reached their peak in the Middle Mississippian period; about 5,000 fossil species are known. About 80 modern species remain.