Gray Sea Star
探検Animal
Gray Sea Star
luidia clathrata
The Gray Sea Star (Luidia clathrata) is an active and fascinating marine echinoderm native to the warm coastal waters of the western Atlantic. Unlike many of its slow-moving, rock-climbing relatives, this species is highly adapted for a dynamic life on soft, shifting sediments. Lacking the typical suction-cupped tube feet, it features pointed, agile tube feet that allow it to glide smoothly and rapidly across sandy and muddy sea floors, or quickly burrow beneath the surface to hide from predators or ambush prey.
生息地: Found in shallow coastal waters, typically on soft sandy or muddy sea floors where it can easily burrow.
外見
This sea star typically features five long, flattened, tapering arms radiating from a relatively small central disc, reaching an overall diameter of 15 to 30 centimeters. Its coloration ranges from light bluish-gray to creamy gray or light brown, and it is easily recognized by a distinct, dark gray or blackish stripe running down the midline of the upper surface of each arm. The upper body is covered with tiny, table-like structures called paxillae that give it a finely granulated texture, while its underside reveals pale, pointed tube feet.
界Animalia門Echinodermata綱Asteroidea目Paxillosida科Luidiidae属Luidia
カテゴリ
Animalレア度
Common
危険度
1/5 · 非常に低い
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おもしろい事実
It has the impressive ability to swallow small prey items, such as clams, completely whole; it then digests the soft tissues internally and spits the empty, clean shells back out.
The distinct dark line down the middle of its arms is formed by a precise biological alignment of its paxillae—tiny, umbrella-shaped skeletal plates that keep sand off its sensitive skin.
Unlike most sea stars that rely on suction cups to scale hard vertical rocks, the Gray Sea Star features pointed, claw-like tube feet uniquely adapted for scurrying over and tunneling into sand.
特殊能力
能力
Rapid Sand Burrowing
Uses its specialized, pointed tube feet to quickly shovel sand aside, allowing it to sink beneath the sediment within seconds to avoid predators or search for food.
能力
Autotomy and Regeneration
Can voluntarily shed an arm when threatened or seized by a predator, later regenerating a complete new arm over several months.
能力
Suckerless Gliding
Moves surprisingly fast over soft substrates using coordinated, stilt-like walking motions of its pointed tube feet rather than suction-cup crawling.
サイズと詳細
- 長さ
- 15+ cm
- 体重
- 0.05+ kg
- 寿命
- 3+ 年
食性と食事
Primarily feeds on small, burrowing invertebrates such as bivalves, gastropods, and small crustaceans, which it swallows whole or digests externally.
年齢による違い: Juveniles feed on organic detritus and microscopic organisms in the sediment, while larger adults target shelled mollusks and active crustaceans.
主な食物
- Coquina Clams
- Dwarf Surfclams
- Amphipods
- Polychaete Worms
採餌方法
- Foraging
生態系とのつながり
hunts
Coquina Clam
Donax variabilis
Preys heavily on this small, burrowing bivalve found in the same sandy littoral zones.
competitor
Beaded Sea Star
Astropecten articulatus
Competes for sandy benthic space and similar small infaunal invertebrate prey.
eaten by
Gag Grouper
Mycteroperca microlepis
This predatory fish occasionally feeds on juvenile and adult Gray Sea Stars.
特徴
このオブジェクトにはまだ特徴バッジが割り当てられていません。
別名
まだ別名はありません。
コレクション
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安全性
危険度
1/5 · 非常に低い
まだ特別な安全上の注意はありません。
よくある質問
Gray Sea Starを見分けるには？
Gray Sea Starを識別する最も簡単な方法は、Snappit自然識別アプリを使用することです。
Gray Sea Starの長さは何ですか？
15+ cm
Gray Sea Starの体重は何ですか？
0.05+ kg
Gray Sea Starの寿命は何ですか？
3+ 年
Gray Sea Starは何を食べますか？
Primarily feeds on small, burrowing invertebrates such as bivalves, gastropods, and small crustaceans, which it swallows whole or digests externally.
Gray Sea Starは通常どこに生息していますか？
Found in shallow coastal waters, typically on soft sandy or muddy sea floors where it can easily burrow.
Gray Sea Starはどのように狩りをしますか？
Foraging
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