How Long Does A Starfish Live?

Starfish are one of the multiple essential and stunning sea creatures. its interesting to know How Long Does A Starfish Live? If you love aquatic creatures, it is clear that you will fancy starfishes. They are non-dangerous and attractive. In some areas of the world, they can be located abundantly. 

Plenty of realities about starfishes make them exceptional among all other sea animals. Starfishes’ lifespan is so large. On average, starfish can live for 5 years. But some types of starfish have a longer lifespan, about 35 years. However, it relies upon the surroundings and the requirement of the water. If harmful enough, starfishes can perish sooner than their desired life span. 

Plastic and other human contaminants are destroying starfishes along with other oceanic life at a quicker rate. Humans are accountable for caring for wild and oceanic life and saving them in all ways possible. 

Keep reading this article to learn more about the lifespan of starfish.

How long do starfish live?

About 2,000 diverse species of sea stars live in the earth’s oceans. They live primarily in every tidal zone and considerably different environments. Because of this variety, setting an average lifespan for the starfish is uncomfortable.

Also, starfish don’t have typical features that decide their age, such as development rings or a predictable correlation between dimension and age. For example, closely interconnected sand dollars have development rings on the vessels of their structure that tell scientists how many years they have lived.

On top of that, starfish, like different Echinoderms, don’t have a senescence agent, so they don’t evolve as ancient as we do. Instead, we establish their life expectancy on how prolonged they can live before something like predation, hunger, or sickness occurs.

How long do starfish live out of water?

Starfish cannot live out of the water; most can control their breath for under 30 seconds. It occurs because they do not own gills and lungs. They use their papulae (skin gills) near their body and tube claws at the bottom of their body to respire.

They are not capable of absorbing the oxygen, they require straight from the air. That situation will control sea stars from releasing carbon dioxide or carbon monoxide from their body. It’ll conduct carbon dioxide or carbon monoxide poisoning and death.

It’s crucial not to carry starfish out of the water, even for an instant. Firstly, because they can’t respire, and secondly, because of chemicals we carry on our skins, we can transport infections and poison them with crude oil, bacteria, or chemicals like sunscreen.

Why do starfish die?


Like many different sea creatures, starfish are hosts of disorders generated by microorganisms. Sea star wasting syndrome was a condition that caused a considerable die-off in 2013 and 2014 along the west coast of North America.

This disorder’s signs include white lesions observed by the decomposition of the tissues, body fragmentation, and death, mostly within one or two days. The disease is contagious, and the disease-cause agent is a virus.


Starfish’s power to connect tightly to stones with suction-cup-like feet and their tough exoskeletons make them hard to discover and eat for many aquatic creatures. However, starfish do have many predators.

Sea stars’ ordinary predators are fish, crawlers, sea turtles, shrimp, crabs, birds, and other sea stars. They and the starfish’s entire body with their mouth convert it upside down and consume the softer inside.


Starfish rely on the food near them due to their sluggish activities. They can reposition to a different place due to extreme conditions. Some individuals frequently move down the beach or shelter areas of the UK during winter to restart to feed with minor aggravations from solid tides.

However, they can only cross long distances like whales with meals. Sometimes the situations can modify the unsettled climate, temperature change, or shortage of essential animal species, and sea stars can perish from starvation.

Unfortunately, recently we can notice ecological inequality more frequently because of human activity and global warming. According to the United Nations, ocean waste influences at least 800 species worldwide, and 80 percent of that waste is plastic.

Scientists calculate that up to 13 million metric tons of plastic are in the sea annually! That’s a trash truckload every minute. Starfish and other aquatic animals eat plastic waste, which induces suffocation, hunger, and drowning.

Sea stars’ famous food is mollusks such as clams and oysters. However, their favorite meals are plankton, and other organic matter, which unfortunately, are combined with microplastic. If small organisms perish because of hunger or plastic eating, bigger ones will also die.


Starfish and flaky stars, also called  Asterozoa, are a mixed and ecologically prosperous members of spiny-skinned echinoderms that basically emerged in fossil history about 480 million years back during the Ordovician time.

Starfish are charming creatures that have a broad range of lifespans. While some species live for an irregular month, others can stay for decades. The lifespan of a starfish dramatically relies on the species and the conditions in which it lives. Starfish are long-lived animals that can deliver years of fun.