# Shag-Rug Nudibranch (*aeolidia papillosa*) The Shag-Rug Nudibranch looks like a colorful, squishy carpet under the sea! Its vibrant colors and unique shape make it a fascinating creature to spot while exploring tide pools. - **Category:** [Invertebrate](https://www.snappit.app/explore/categories/invertebrate) - **Rarity:** Common - **Danger:** 1/5 · Very low - **Habitat:** Shag-Rug Nudibranchs live in coastal waters, often hiding among rocks and seaweed. - **Also known as:** Aeolid, Nudibranch ![Shag-Rug Nudibranch](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Aeolidia_papillosa_2.jpg&width=800) Photo: Jan Haaga, Public domain · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Aeolidia_papillosa_2.jpg) ## Appearance The Shag-Rug Nudibranch has a soft, oval body covered in numerous fluffy, finger-like projections called cerata, resembling a shaggy rug. It typically displays a cream to pale brown body with white-tipped cerata, making it blend well with its environment. ## Taxonomy - **Kingdom:** Animalia - **Phylum:** Mollusca - **Class:** Gastropoda - **Order:** Nudibranchia - **Family:** Aeolidiidae - **Genus:** Aeolidia ## Interesting facts - A Shag-Rug Nudibranch is a hermaphrodite, meaning each individual has both male and female reproductive parts. - Nudibranchs don't have a shell to protect them like snails; they rely on other cool defenses! - These sea slugs breathe through feathery gills on their back, not through lungs like us! - They lay their eggs in beautiful, spiral ribbons that attach to rocks or seaweed underwater. ## Special abilities - **Sting Shield:** Shag-Rug Nudibranch can steal stinging cells from its prey because of specialized sacs that help them defend against predators. - **Regeneration Power:** Shag-Rug Nudibranch can regrow lost or damaged parts of its body, including its cerata, helping them recover from attacks. - **Anemone Adept:** Shag-Rug Nudibranch can safely graze on stinging sea anemones because its skin is immune to their venom. ## Measurements & details - **Length:** 6 cm - **Weight:** 5 g - **Lifespan:** 0.5 years - **Maximum Depth:** 25 m ## Diet & Feeding This sea slug is a carnivore that dines exclusively on stinging sea anemones! - **Primary Foods:** Beadlet Anemone, Plumose Anemone, Stubby Rose Anemone, various other sea anemones - **Foraging Method:** Grazing ## Ecological connections - **Eats:** Beadlet Anemone (*Actinia equina*) — Its primary food source, providing defense cells. - **Eats:** Plumose Anemone (*Metridium senile*) — Common prey, found grazing on these in cooler waters. - **Eaten by:** [Sunflower Sea Star](https://www.snappit.app/explore/sunflower-sea-star) (*Pycnopodia helianthoides*) — A large predator of various nudibranchs and invertebrates. - **Eaten by:** Atlantic Wolfish (*Anarhichas lupus*) — A bottom-feeding fish known to prey on sea slugs. ## Traits - [Solitary](https://www.snappit.app/explore/traits/solitary): Solitary animals live alone for most of their lives, only interacting with others for mating or parental care. - [Colorful](https://www.snappit.app/explore/traits/colorful): Colorful describes organisms or objects displaying a wide range of bright and distinct colors. - [Carnivorous](https://www.snappit.app/explore/traits/carnivorous): This trait identifies organisms whose diet consists entirely or primarily of animal tissue. - [Aquatic](https://www.snappit.app/explore/traits/aquatic): Aquatic habitats encompass environments where organisms live predominantly in water, including oceans, rivers, lakes, and wetlands. - [Marine](https://www.snappit.app/explore/traits/marine): Marine habitats encompass all saltwater environments of the Earth's oceans, supporting an immense diversity of aquatic life. ## Collections - [Invertebrates](https://www.snappit.app/explore/collections/invertebrates) ## Safety **Danger:** 1/5 · Very low No special safety notes yet. ## Frequently Asked Questions ### How to identify Shag-Rug Nudibranch? Look for fins, arms, tentacles, shells and body symmetry. Underwater light shifts colors, so structure and markings usually matter more than shade. Sea Creature Identifier: upload a photo and compare the visible details. ### How long is Shag-Rug Nudibranch? 6 cm ### How much does Shag-Rug Nudibranch weigh? 5 g ### How long does Shag-Rug Nudibranch live? 0.5 years ### What does Shag-Rug Nudibranch eat? This sea slug is a carnivore that dines exclusively on stinging sea anemones! ### Where is Shag-Rug Nudibranch usually found? Shag-Rug Nudibranchs live in coastal waters, often hiding among rocks and seaweed. ### How does Shag-Rug Nudibranch hunt? Grazing ### How deep can Shag-Rug Nudibranch go? 25 m ## Where to spot - [East Park](https://www.snappit.app/guides/places/east-park) — Washington, US · Park - [Monterey Bay Aquarium](https://www.snappit.app/guides/places/monterey-bay-aquarium-california) — California, US · Aquarium - [Monterey Bay Aquarium](https://www.snappit.app/guides/places/monterey-bay-aquarium) — California, US · Zoo [View all places to see Shag-Rug Nudibranch](https://www.snappit.app/guides/where-to-see/shag-rug-nudibranch) ## More Invertebrate - [Coral](https://www.snappit.app/explore/coral) - [Crab Spider](https://www.snappit.app/explore/crab-spider) (*Mecaphesa asperata*) - [Garden Spider](https://www.snappit.app/explore/garden-spider) (*Araneus diadematus*) - [Brown Recluse Spider](https://www.snappit.app/explore/brown-recluse-spider) (*Loxosceles reclusa*) --- Source: [Shag-Rug Nudibranch: Facts & Places to See — Snappit](https://www.snappit.app/explore/shag-rug-nudibranch)