Double Sea Star

Double Sea Star
Latin name:
(Iconaster longimanus)

Care Level





Orange, Tan



Preferred Conditions

72-78° F, dKH 8-12, pH 8.1-8.4, sg 1.023-1.025

Avg. Max Size


Minimum Tank Size


Highest Rated Food
Highest Rated Coloring Enhancing Fish Food
Fluval Bug Bites Color Enhancing Fish Food
Insect Larvae & Salmon Recipe Fish Food
The Fluval Bug Bites Color Enhancing Fish Food for Tropical Fish is a highly rated product. The granules are designed to enhance the color of tropical fish, and many customers have noticed a significant improvement in the vibrancy of their fish’s colors. The food is made with high-quality ingredients and is easily digestible for the fish. Superior in terms of color enhancement. #1 Recommended Fish Food

In the vast expanse of the ocean, there lies a captivating creature that embodies the beauty and mystery of the marine world: the Double Sea Star. This extraordinary echinoderm, also known as the Two-Spotted Sea Star, possesses unique features that set it apart from its starfish counterparts. Embark on a journey to unravel the secrets of this enigmatic marine marvel.

Anatomy of the Double Sea Star

The Double Sea Star boasts a distinctive appearance that reflects its remarkable anatomy. Its body, composed of a central disc and five arms, exhibits a vibrant coloration ranging from orange to red, often adorned with white or yellow spots. The central disc, which serves as the central hub of the sea star’s body, houses vital organs and connects the arms. Each arm, flexible and muscular, extends outward from the central disc, enabling the sea star to navigate its marine environment with grace and agility.

Tube Feet: A Symphony of Movement

The Double Sea Star’s tube feet, tiny, suction-cup-like structures located on the underside of its arms, play a crucial role in its locomotion and feeding. These tube feet, powered by a hydraulic system, allow the sea star to adhere to surfaces, crawl along the seafloor, and manipulate prey. The coordinated movement of the tube feet creates a mesmerizing spectacle, akin to a symphony of motion.

Sensory Organs: Navigating the Marine Realm

The Double Sea Star possesses a sophisticated array of sensory organs that enable it to navigate its marine environment effectively. Eyespots, located at the tips of its arms, detect changes in light intensity, providing the sea star with a rudimentary sense of vision. Additionally, sensory cells distributed throughout its body allow it to sense touch, temperature, and chemical stimuli, helping it locate prey and avoid predators.

Behavior of the Double Sea Star

The Double Sea Star exhibits a fascinating array of behaviors that reflect its unique adaptations to its marine habitat. Its feeding habits, reproductive strategies, and defensive mechanisms offer a glimpse into the intricate life of this remarkable creature.

Feeding Habits: A Carnivorous Delicacy

The Double Sea Star is a voracious predator, primarily feeding on mollusks, sea urchins, and other invertebrates. Its tube feet play a crucial role in capturing prey. The sea star extends its arms, using its tube feet to grip and hold onto its victim. Once captured, the sea star everts its stomach out of its mouth, engulfing the prey and digesting it externally. This remarkable feeding behavior showcases the Double Sea Star’s exceptional adaptability to its marine environment.

Reproductive Strategies: Ensuring the Survival of the Species

The Double Sea Star employs two distinct reproductive strategies to ensure the survival of its species. Asexual reproduction, through a process called fission, allows the sea star to split its body into two or more individuals, each capable of developing into a complete sea star. Additionally, sexual reproduction occurs when male and female sea stars release their gametes into the water, resulting in fertilization and the development of new offspring. These reproductive strategies contribute to the resilience and adaptability of the Double Sea Star population.

Defensive Mechanisms: A Master of Disguise

The Double Sea Star possesses several defensive mechanisms to protect itself from predators and environmental threats. Its ability to camouflage itself by changing its color and texture allows it to blend seamlessly with its surroundings, evading detection by potential predators. Additionally, the sea star can regenerate lost arms, a remarkable adaptation that enhances its survival chances in a challenging marine environment.

Habitat and Distribution of the Double Sea Star

The Double Sea Star inhabits a diverse range of marine environments, showcasing its adaptability and resilience. Its presence can be found in shallow waters, rocky shores, and coral reefs, where it thrives amidst the vibrant marine life. The sea star’s distribution spans across the Pacific Ocean, from the coast of North America to the waters of Japan and Australia. Its ability to survive in various habitats highlights its ecological importance and the resilience of marine ecosystems.

Intriguing Facts About the Double Sea Star

The Double Sea Star holds a wealth of intriguing facts that captivate marine enthusiasts and scientists alike. Its unique characteristics and behaviors make it a fascinating subject of study.

  • Regeneration: The Double Sea Star possesses an extraordinary ability to regenerate lost arms. Even if it loses multiple arms, the sea star can regenerate them over time, demonstrating its remarkable resilience.
  • Lifespan: The lifespan of the Double Sea Star varies depending on the species, but some individuals can live for up to 10 years. This longevity reflects the sea star’s adaptability and the stability of its marine environment.
  • Symbiotic Relationships: The Double Sea Star engages in symbiotic relationships with other marine organisms. For instance, it often carries brittle stars on its back, providing them with protection and transportation. This mutually beneficial relationship highlights the interconnectedness of marine ecosystems.

FAQs About the Double Sea Star

As an affiliate marketer, you may encounter questions from potential customers about the Double Sea Star. Here are some frequently asked questions and their answers to help you provide informed responses:

  1. Q: What is the significance of the Double Sea Star’s tube feet?
  2. A: The tube feet of the Double Sea Star play a vital role in its locomotion, feeding, and sensory perception. They allow the sea star to move, capture prey, and sense its surroundings, making them essential for its survival.
  3. Q: How does the Double Sea Star reproduce?
  4. A: The Double Sea Star employs both asexual and sexual reproduction. Asexual reproduction occurs through fission, where the sea star splits its body into two or more individuals. Sexual reproduction involves the release of gametes into the water, resulting in fertilization and the development of new offspring.
  5. Q: What are some of the threats faced by the Double Sea Star?
  6. A: The Double Sea Star faces several threats, including habitat loss, pollution, and overfishing. Climate change also poses a significant threat, as rising ocean temperatures and acidification can disrupt the sea star’s physiology and reproductive success.


The Double Sea Star stands as a testament to the wonders of the marine world. Its unique anatomy, fascinating behavior, and intriguing facts captivate marine enthusiasts and scientists alike. As an affiliate marketer, promoting products or services related to the Double Sea Star can be a rewarding experience. By providing accurate information and engaging content, you can educate potential customers about this remarkable creature and its importance in marine ecosystems. Embrace the opportunity to share the beauty and wonder of the Double Sea Star with the world.