Giant Keyhole Limpet
EntdeckenInvertebrate
Giant Keyhole Limpet
megathura crenulata
The Giant Keyhole Limpet is a remarkably large marine mollusk native to the rocky shores of the Pacific coast of North America. Unlike typical limpets that rely heavily on a visible shell for protection, this unique gastropod is famous for its thick, velvety mantle that grows up and over its shell, leaving only a small, keyhole-like opening exposed at the top. This opening serves as an exit portal for water, waste, and reproductive cells. In scientific communities, this species is highly celebrated for its contribution to modern medicine. Its copper-based blood contains Keyhole Limpet Hemocyanin, a massive protein that stimulates the human immune system and is used globally in immunology research, diagnostic tests, and the development of cancer vaccines.
Lebensraum: Found in rocky intertidal and shallow subtidal zones along Pacific coastlines, often clinging to reefs or hidden within dense kelp forests.
Aussehen
This massive limpet can reach up to 13 centimeters in length, featuring an oval shell with a distinct, keyhole-shaped opening near the center. However, the shell is usually completely covered by its thick, fleshy mantle, which varies in color from dark black and mottled grey to sandy tan. The underside reveals a broad, muscular foot used to grip rocky surfaces tightly.
ReichAnimaliaStammMolluscaKlasseGastropodaOrdnungLepetellidaFamilieFissurellidaeGattungMegathura
Kategorie
InvertebrateSeltenheit
Common
Gefahr
1/5 · Sehr gering
Snaps
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Interessante Fakten
Its blue-colored blood contains a protein so complex that scientists have been unable to synthesize it in a laboratory, making wild or aquacultured limpets the only source.
The characteristic keyhole at the top of its shell acts like a chimney, allowing wastewater and reproductive materials to exit without getting trapped under the mantle.
Unlike most other limpets that have hard, exposed, cone-shaped shells, the Giant Keyhole Limpet looks and feels more like a large, velvety sea slug due to its expansive mantle.
Besondere Fähigkeiten
Fähigkeit
Medical Blood Shield
Produces Keyhole Limpet Hemocyanin, a highly complex, oxygen-binding protein in its blood that serves as a powerful immunostimulant in human medicine.
Fähigkeit
Fleshy Shielding
Can expand its large mantle to cover and protect its entire shell from predators, preventing invasive organisms from settling on its hard surface.
Fähigkeit
Suction Grip
Uses its wide, muscular foot to create a powerful suction seal on wave-swept rocks, preventing it from being washed away by strong Pacific swells.
Maße und Details
- Länge
- 6-13 cm
- Gewicht
- 0.1-0.4 kg
- Lebenserwartung
- 5-15 Jahre
- Gelegegröße
- 10000-80000
- Brutzeit
- 1-3 Tage
Ernährung und Fütterung
It grazes slowly across rocky substrates, scraping up a variety of organic materials including algae, tunicates, bryozoans, and colonial sponges.
Hauptnahrung
- Microalgae
- Colonial tunicates
- Sponges
- Bryozoans
Nahrungssuche
- Grazing
Ökologische Zusammenhänge
eaten by
Ochre Sea Star
Pisaster ochraceus
Predator that preys on the limpet using its tube feet to pry it from rocks.
hunts
Orange Puffball Sponge
Tethya aurantia
The limpet grazes on this common tide pool sponge as part of its varied diet.
eaten by
California Two-spot Octopus
Octopus bimaculoides
A common cephalopod predator that hunts the limpet in subtidal zones.
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Sicherheit
Gefahr
1/5 · Sehr gering
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Häufig gestellte Fragen
Wie identifiziert man Giant Keyhole Limpet?
Der einfachste Weg, Giant Keyhole Limpet zu bestimmen, ist die Verwendung der Naturführer-App Snappit.
Was ist der/die/das länge von Giant Keyhole Limpet?
6-13 cm
Was ist der/die/das gewicht von Giant Keyhole Limpet?
0.1-0.4 kg
Was ist der/die/das lebenserwartung von Giant Keyhole Limpet?
5-15 Jahre
Was frisst Giant Keyhole Limpet?
It grazes slowly across rocky substrates, scraping up a variety of organic materials including algae, tunicates, bryozoans, and colonial sponges.
Wo findet man Giant Keyhole Limpet normalerweise?
Found in rocky intertidal and shallow subtidal zones along Pacific coastlines, often clinging to reefs or hidden within dense kelp forests.
Wie jagt Giant Keyhole Limpet?
Grazing
Was ist der/die/das gelegegröße von Giant Keyhole Limpet?
10000-80000
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