Sea Lily

The Sea lilies are not actually lilies or even plants. It is a marine animal called crinoids. Unlike other types of crinoids, the stems of this animal are on the bottom of the sea. However, these creatures are appropriately named because they resemble lilies. They can usually be found in the depths of the ocean, and they feed on plankton in the water. Although usually fixed on the bottom of the sea, these unusual marine animals can be uprooted to escape predators. 

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Crinoids or Chrinoidea are a type of echinoderms. They are marine invertebrates with tubular legs and a somewhat symmetrical body. They are members of the phylum Echinoderm and are related to starfish and sea urchins. Most crinoids, such as crinoids, existed in large numbers millions of years ago and still exist today. Sea lilies are neither flowers nor plants, but they do look like lilies. Some scientists may even call this animal a living fossil. Its close relative, Feather Star, is also crinoids, but without the long stems of crinoids, they can swim freely.

In this article, we will have a deep insight into the life of the Antedon sea lily, salient features of the sea lily and the sea lily scientific name. 

Sea Lily Scientific Name

We know that every creature in nature has been assigned certain scientific names. Similarly, the sea lily scientific name is also included which mostly elaborates the family and species. The Phylum Hemichordata is the sea lily scientific name. The sea lily scientific name phylum hemichordate is a Worm-like marine creature with an organ system of the body, bilaterally symmetrical, triploblastic and coelomate creatures. 

Shape: 

The members of the echinoderms are marine animals, which can also swim through the ups and downs of the arm. The largest sea lily of the mantis is called the Metacrinus superbus. In those stemless species, such as Antedon, the lower base layer is replaced by a single large plate called the Centrodorsal plate. Comatulida. Other larger ones. family. 

Antedon Sea Lily Excretory System: 

Antedon sea lily has no clear excretory organs. Sea lily and more flexible shapes. Researchers are studying the ecology of feather stars in the Philippines, including the unique ways that infected species adapt to their hosts.  The crinoids, all marine invertebrate crinoids (Crinoids, Echinoderm) that are attached to the seafloor by stems. Other crinoids (like Feather Star) are similar to crinoids; however, they do not have stems and can be moved from one place to another. The stem of the crinoids has a bulbous body with leaf-like tentacles, this animal is similar to a plant. 

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The stem is composed of calcareous discs and the body has an internal skeleton of very tight calcareous plates. 4,444 crinoids live primarily in deep water and feed on debris. Of the 80 living species, no more than 60 cm (24 inches) tall, many belong to the genus Metacrinus, distributed from Japan to Australia. A common species from the West Indies is Neocrinus decorous. More than 5,000 extinct species are known, about 20 m (65 ft) long. They are important indicator fossils of the Paleozoic era (542 million to 251 million years ago). Bourgueticrinida (Bourgueticrinida) is a group of marine animals called crinoids. Usually found in deep water (approximately 18,000 feet deep). 

When they reach adulthood, they adhere to the seabed through stems. The main body is called the calyx and the back of the calyx is covered with plates of calcium carbonate. The sea lily will usually have five or more pairs of feathery arms, which gives the crinoids their name. The arm collects the organic matter from the cilia and brings it to the mouth.  After food is digested in the U-shaped intestine, the waste is discharged through the anus and is inconvenient to place near the mouth. 

Some crinoids grow up to a meter long, but most are smaller. During the Permian period (300.25 billion years ago), crinoids flourished, with 600 species recorded, but only 80 species are known today and they are divided into five families. A close relative of sea lilies is named Feather Star, which is somewhat similar, but has no stem and is considered freestyle. However, the term freestyle is a bit misleading because Feather Star lacks a structure that can move significantly. Free floats can be more accurate. 

Crinoids have a water circulation system that can maintain the water pressure in the body. A basic blood system runs between the sinus cavities to transport nutrients and functions as a system for respiration and excretion. 

The nervous system of the sea lily and all the crinoid family is very basic. But, in the crinoids family, it is noticed that they have different males and females. They reproduce by releasing sperm and eggs into the sea. The fertilized eggs hatch into free-floating larvae, which quickly develop into adults and attach to the seafloor. The main natural enemy of crinoids is sea urchins. pieces of sea lily fossil columns mined from limestone are strung into beads, which are called St. Cuthbert beads in the United Kingdom and Indian beads in the United States.

Characteristics of Antedon Sea Lily

As the name suggests, crinoids have superficial similarities with flowering plants, but they are some of the most attractive but little-known marine animals. Crinoids are members of the class of crinoids (echinoderm), which also includes feather stars. 

Echinoderms are animals you should know. If you know starfish, then you know very well what echinoderms are. Echinoderms are invertebrates. The name actually means prickly skin! All animals in this phylum exhibit spiny skin and are therefore grouped together. 

Most of the body is not made of living tissue, but of calcium carbonate, which provides a rigid structure to support the animal's head. In this protective armour, when crinoids are caught on the bottom of the sea, their movements are limited to simple bends. In some cases, crinoids are known to break away from the substrate they are anchored to and float along the bottom until they find a more suitable location. In 2005, a submersible near Grand Bahama Island recorded crinoids crawling across the ocean floor at a speed of 140 miles per hour. 

Most crinoids can only be known from fossil remains. These species seem to be very abundant in certain periods of the geological history of the earth. Today, approximately 80 species are known to exist. Despite this, little is known about these animals, mainly because the vast majority tend to live in deep-sea trenches, usually at a depth of 3,9354,265 feet (1,2001,300 meters) and occasionally at a depth of 29,530 feet. (9,000 meters). At these depths, almost no light penetrates the water surface, and there are few living organisms, and they are far apart. 

Most species that live at this depth need to conserve energy, and crinoids have very few living organs and tissues, and their metabolic rate can be very low. Most of the food they obtain comes in the form of manure rain from the upper level of the water: as animals and plants die, parts of their bodies fall into the water column, where they are eliminated by other organisms. . Some of these materials reach the deepest areas and provide a stable but limited food supply for crinoids. 

The crinoids are the oldest echinoderms. They are solitary and immobile creatures at the door. They have at least ten appendages that protrude from the main stem of the body, which are used to eat waste or organic matter that floats in the ocean. Echinoderms may be different in morphology (structure and shape) at first glance, but they all have the same characteristics. These animals have very unique shapes and beautiful colours. They are important from an ecological and geological point of view because they provide valuable clues about the geological environment.

Salient Features of Antedon Sea Lily

Crinoids are also related to more familiar echinoderms, such as sea urchins, starfish, and sea cucumbers. However, unlike these small and short shapes, the body of crinoids consists of elongated stems, usually fixed by flexible cirrus clouds. 

The has a joint-like body up to 27.5 inches (70 cm) in length, but most living species are much smaller. (Some fossil species have been found to have stems longer than 82 feet or 25 m.) Some crinoids have branched structures, while others have simple and straight designs. The colours of crinoids vary greatly, but most are subtle shades of yellow, pink, or red. 4,444 crinoids and feather stars are marine animals with five arms and an upturned mouth. The main part is the crown, which contains the mouth, digestive tract, and anus (AYnuhs). The arms grow from the crown. Crinoids have a stem under the crown, which looks like a flower. 

The feather star has a group of tentacles under the crown, which looks like a fern. The arms of both animals usually have branches, up to two hundred in some species. Each arm and branch has a feeder lined with handles called pins. The arm length of crinoids and feather stars is 0.4 to 14 inches (1 to 35 cm). The stem of crinoids is about 1 meter (3.3 feet) long. Feather stars are white, black, purple, red, green, brown, purple, or a combination of various colours. The darker the animal lives, the lighter the colour. Sea lilies are white.  

1. Geographic Distribution:

The Crinoids and feathered stars live in the western Pacific and on both sides of the Atlantic Ocean. 

2. Habitat:

Most crinoids live in deep water and most feathered stars live on coral reefs. Both animals tend to live on hard surfaces. 

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3. Diet: 

The crinoids and feathered stars eat plankton and waste. Planktons are tiny plants and animals that float on water. 

4. Behaviour and Reproduction: 

Crinoids and feathered stars stand upright in the current and stretch their branches so that their feeding channel can capture plankton. Feather stars are usually in groups, clinging to crevices and other places where they can hide most of their bodies. Most species come out at night, revealing part or all of their arms and even their entire body. Sea lilies also live in groups, but due to the lack of light in deep water, they do not exit the mode day and night. 

The Feather star which is almost related to sea lilies can crawl with their arms. Some people swim with alternating arms up and down. They descended from the water with their arms extended like a parachute. Only a few crinoids can crawl, none can swim.  The crinoids and feather stars can regenerate lost body parts. As long as at least one arm and nerve centre are intact, Yuxing can grow arms again. Sea lilies can grow a whole crown again. 

The crinoids and feather stars have different genders. Males release sperm into the water, and females of most species release eggs into the water. In some feather stars, the eggs remain in the female for several days before being released into the water or sac. After combining with sperm, almost all crinoid eggs and feather stars will develop into non-feeding drifting larvae (larvae), which are early-stage animals and will change before reaching adulthood. These larvae develop into non-feeding benthic larvae with stem and then into stemmed benthic larvae. The young are ready to reproduce in twelve to eighteen months.

Conclusion

Commonly known as sea feathers, feather stars or crinoids, they are found in shallow water attached to rocks or stones. The main body consists of a small central disc and 5 branched radial arms. The central intervertebral disc has an obvious buccal surface and buccal surface. The buccal surface remains rearward with a central multiple radiation opening and a small involuntary anal opening in the nipple. The surface of the bill is rough, with about 5 long knotted curls, in all the small pieces of bone for the union. 

The arms are separated near the bottom, so it shows ten instead of five. Each arm is traversed by a moving slot along its length, and there is a row of opposed needles along each side edge. Along the lateral edge of the tube, the slot is a row of small and delicate pins without suction cups. The sexes are separated and development includes crinoids larvae.

The sea Lily’s are not flowers or plants, but they look like lilies. Some scientists may even consider this animal to be a living fossil. Its close relative, the Feathered Star, is also a species with curly hair, but it does not have a long stem-like a sea urchin and is in flight.  

Although they are attached to the ocean floor for most of their lives, water lilies are still able to move when needed. Sea urchins are often on the move when they need to escape predators, such as sea urchins. When it needs to move, the water lily will break a small part of its bottom. In this way, the animal frees itself from the ocean floor and can crawl out of danger.