# Giant Isopod (*Bathynomus giganteus*) Meet the Giant Isopod, a fascinating deep-sea creature that looks like a giant underwater roly-poly! It lives in the darkest parts of the ocean and has a unique way of surviving in the cold, high-pressure environment. - **Category:** [Invertebrate](https://www.snappit.app/explore/categories/invertebrate) - **Rarity:** Rare - **Danger:** 1/5 · Very low - **Habitat:** Deep Sea - **Also known as:** Bathynomus giganteus ![Giant Isopod](https://res.cloudinary.com/drieglelr/image/upload/v1771426047/objects/6114.jpg) ## Appearance The Giant Isopod has a large, flattened, oval-shaped body covered in a hard, segmented exoskeleton, typically dark grey, brown, or purple. It possesses prominent, widely spaced compound eyes on its head. This deep-sea creature resembles a colossal land pillbug, distinguishing it from most marine life. ## Taxonomy - **Kingdom:** Animalia - **Phylum:** Arthropoda - **Class:** Malacostraca - **Order:** Isopoda - **Family:** Cirolanidae - **Genus:** Bathynomus ## Interesting facts - Giant isopods are related to the roly-polies you find in your garden, but much, much bigger! - Sometimes, scientists catch them and they've eaten so much, they look like bloated sausages! - These amazing creatures have been around for millions of years, barely changing their ancient design! - They spend most of their lives creeping along the freezing-cold, super-dark ocean floor! ## Special abilities - **Epic Fasting:** Giant Isopod can survive for years without eating, because they can slow down their metabolism to extreme levels when food is scarce. - **Deep-See Eyes:** Giant Isopod has large, widely spaced compound eyes that help them detect faint bioluminescence and movement in the dark ocean depths. - **Armored Curl-Up:** Giant Isopod can curl into a tight ball, protecting its softer underside from predators with its hard, segmented exoskeleton. ## Measurements & details - **Size:** 190-500 mm - **Lifespan:** 3650-18250 days - **Leg Count:** 14 ## Diet & Feeding These deep-sea scavengers mostly eat dead whales, fish, and other decaying matter that falls from above. - **Primary Foods:** Dead whales, Dead fish, Squid carcasses, Sea cucumber remnants, Smaller invertebrates - **Foraging Method:** Scavenging ## Ecological connections - **Eaten by:** [Greenland Shark](https://www.snappit.app/explore/greenland-shark) (*Somniosus microcephalus*) — Opportunistically preys on isopods in its deep-sea hunting. - **Eats:** [Sperm Whale](https://www.snappit.app/explore/sperm-whale) (*Physeter macrocephalus*) — Feeds on fallen carcasses, contributing to ocean floor recycling. - **Eats:** Roughhead Grenadier (*Macrourus berglax*) — Scavenges on its decaying remains, cleaning the deep-sea floor. ## 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. - [Scavenger](https://www.snappit.app/explore/traits/scavenger): Scavengers consume dead organic matter, helping to decompose carcasses and other waste in the ecosystem. - [Ancient Lineage](https://www.snappit.app/explore/traits/ancient-lineage): This trait signifies organisms belonging to a very old evolutionary group with ancestors dating back millions of years. - [Deep Sea](https://www.snappit.app/explore/traits/deep-sea): Deep sea habitats are characterized by extreme pressure, darkness, and cold temperatures, supporting unique life forms below the sunlit zone. - [Longevous](https://www.snappit.app/explore/traits/longevous): This trait characterizes organisms with an exceptionally long lifespan compared to others of their kind. - [Armored](https://www.snappit.app/explore/traits/armored): Armored describes animals protected by a hard, external covering or shell for defense. - [Regenerative](https://www.snappit.app/explore/traits/regenerative): Regenerative organisms possess the ability to regrow lost or damaged body parts, tissues, or organs. - [Giant](https://www.snappit.app/explore/traits/giant): Giant describes organisms or objects of significantly larger size than average for their species or type. - [Nocturnal](https://www.snappit.app/explore/traits/nocturnal): Nocturnal animals are primarily active during the nighttime hours, typically resting or sleeping during the day. ## Collections - [Insects](https://www.snappit.app/explore/collections/insects) ## Safety **Danger:** 1/5 · Very low Remember, Giant Isopods live in the deep sea, far away from where we swim. They are not dangerous to us. ## Frequently Asked Questions ### How to identify Giant Isopod? 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 big is Giant Isopod? 190-500 mm ### How long does Giant Isopod live? 3650-18250 days ### What does Giant Isopod eat? These deep-sea scavengers mostly eat dead whales, fish, and other decaying matter that falls from above. ### Where is Giant Isopod usually found? Deep Sea ### How does Giant Isopod hunt? Scavenging ### How many legs does Giant Isopod have? 14 ## Where to spot - [Key West Aquarium](https://www.snappit.app/guides/places/key-west-aquarium) — US · Zoo - [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 Giant Isopod](https://www.snappit.app/guides/where-to-see/giant-isopod) ## 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: [Giant Isopod: Facts & Places to See — Snappit](https://www.snappit.app/explore/giant-isopod)