Quick answer
Starfish (Asteroidea) typically live around 5–35 years depending on species. Wild averages fall when predation, disease, or habitat loss rise; managed populations can live longer with stable food and veterinary care.
Key takeaway
Starfish (Asteroidea) typically live around 5–35 years depending on species. Wild averages fall when predation, disease, or habitat loss rise; managed populations can live longer with stable food and veterinary care.
Starfish lifespan in the wild
Field and museum records place most starfish near 5–35 years depending on species. That figure blends ages at death across regions, so treat it as a planning range. Body size (about 0.5 kg) and risk lifestyle both shape the average.
What shortens starfish lives
Predation, infectious disease, injury, food shortages, and habitat fragmentation cut survival. Roadkill and human conflict matter wherever starfish share landscapes with people.
What helps starfish live longer
Connected habitat, low chronic stress, and reliable food support longevity. For captive or domestic relatives, species-correct diet and veterinary screening matter more than generic “pet” advice.
Starfish life stages
Juveniles usually face higher mortality than prime adults. Older animals may move less, show dental wear, or lose body condition — useful signs when ageing starfish in the field.
Diet and ecological role
Starfish feed primarily on other animals (mollusks, clams, mussels). Foraging strategy depends on season, local prey or plant abundance, and competition with other species. As invertebrates, they play a measurable role in their ecosystem — controlling prey numbers, dispersing seeds, or shaping habitat through feeding and movement patterns that other wildlife depends on.
Conservation and human interaction
The IUCN lists starfish as Least Concern. Habitat loss, hunting, climate change, and conflict with people are among the main threats worldwide. Responsible ecotourism, anti-poaching patrols, and community-based conservation help in parts of their range. Never approach or feed wild starfish — observe from a safe distance and support reputable conservation organisations.
Sources
Starfish FAQs
How long do starfish live?
Starfish (Asteroidea) typically live around 5–35 years depending on species. Wild averages fall when predation, disease, or habitat loss rise; managed populations can live longer with stable food and veterinary care.
What is the scientific name of the starfish?
Asteroidea — used in research and conservation listings for starfish.
What do starfish eat?
Starfish eat mollusks, clams and mussels, with seasonal and regional variation in Ocean floors, from tide pools to the deep sea.
Where do starfish live?
They are associated with Ocean floors, from tide pools to the deep sea. Local presence depends on food, cover, and human land use.
What is the conservation status of starfish?
Listed in our guides as Least Concern. Check the IUCN Red List and national assessments for the latest formal category.