Many unrelated groups
Insects, arachnids, crustaceans, mollusks, cnidarians, echinoderms, and millipedes differ greatly in anatomy and evolutionary history.
invertebrate animals list
Invertebrate animals list
Discover animals without backbones, from tiny pollinators and web builders to reef mollusks and intelligent cephalopods.
What belongs in this list?
Invertebrate is a practical term for animals without a vertebral column. It includes many separate branches of animal life rather than one narrow biological class.
Ecosystem work
Invertebrates pollinate plants, recycle nutrients, build reefs, filter water, control prey populations, and feed many larger animals.
Insects are one subset
All insects are invertebrates, but spiders, scorpions, crabs, octopuses, jellyfish, and sea stars are not insects.
25 invertebrates in the catalog
The list is rendered in the page for browsing and search discovery. A reviewed label marks animals with a dedicated picture and source-backed profile.
- Atlas MothTropical forestCatalog entry
- Blue-ringed OctopusTide poolCatalog entry
- Chambered NautilusDeep tropical reefCatalog entry
- Coconut CrabTropical islandCatalog entry
- Common OctopusRocky coastReviewed profile
- CuttlefishCoastal oceanCatalog entry
- DragonflyPond and wetlandCatalog entry
- Emperor ScorpionWest African forestCatalog entry
- FireflyMeadow and woodlandCatalog entry
- Giant African MillipedeTropical forest floorCatalog entry
- Giant ClamCoral reefCatalog entry
- Giant Pacific OctopusNorth Pacific reefCatalog entry
- Golden Orb-weaverWarm woodlandCatalog entry
- Goliath BeetleAfrican rainforestCatalog entry
- Honey BeeMeadow and gardenReviewed profile
- Japanese Spider CrabDeep coastal waterCatalog entry
- Leafcutter AntTropical forestCatalog entry
- Mantis ShrimpCoral burrowCatalog entry
- Monarch ButterflyMeadow and gardenReviewed profile
- Moon JellyCoastal oceanCatalog entry
- Orchid MantisTropical vegetationCatalog entry
- Peacock SpiderAustralian scrubCatalog entry
- Sea StarRocky shoreReviewed profile
- Stag BeetleOld woodlandCatalog entry
- Walking StickForest vegetationCatalog entry
Reviewed invertebrates profiles
Every profile includes an original overview, adaptations, behavior, conservation context, sources, and an image license record.
Invertebrate
Monarch Butterfly
Meadows, roadsides, grasslands, gardens, and open woodland
Invertebrate
Common Octopus
Rocky reefs, coastal shallows, seagrass, rubble, and den sites
Invertebrate
Honey Bee
Flower-rich grassland, woodland edge, farms, gardens, and managed hives
Invertebrate
Sea Star
Marine habitats from tide pools and reefs to sand, seagrass, and the deep seaCommon questions
What is an invertebrate?
An invertebrate is an animal without a backbone or vertebral column.
Are spiders insects?
No. Spiders are arachnids with eight legs, while adult insects have six legs and a three-part body.
Are octopuses invertebrates?
Yes. Octopuses are mollusks and have no internal backbone.