Orange Sea Grapes – Stolonica socialis

, Orange Sea Grapes, Stolonica socialis
Depth: 5 - 35 m
Water Type: Marine
Toxicity: Toxic hazard unknown
Red List Status: Not evaluated (NE)
Temperature: 55.4 °F - 64.4 °F (13°C - 18°C)

Orange Sea Grapes, scientifically known as Stolonica socialis, are a fascinating and vibrant species of tunicate found in the marine environment. These colonial organisms are renowned for their distinctive appearance and ecological importance.

Description & Characteristics

Stolonica socialis, commonly known as Orange Sea Grapes, are colonial tunicates that form clusters of small, grape-like individuals. These individuals, known as zooids, are typically orange to reddish-orange in color, adding a splash of vibrancy to their surroundings. They can grow up to 1 centimeter in size and are characterized by their transparent, gelatinous outer layer, or tunic, which covers their body. This tunic is often studded with small, white spots, adding another layer of visual interest.

Habitat and Occurrence

Orange Sea Grapes, Stolonica socialis, are predominantly found in intertidal zones and shallow subtidal areas. Their preference for these regions indicates a strong adaptability to a range of water depths and exposure to sunlight. They are commonly encountered on rocky surfaces, piers, and boat hulls, often forming extensive colonies that cover considerable areas.

Their distribution extends across various marine zones, including the intertidal zone, which is the area between high and low tide marks, and the shallow subtidal zone, which lies just below the intertidal zone. This adaptability allows them to thrive in diverse environments, contributing to the rich biodiversity of these ecosystems.

Taxonomy

The species Stolonica socialis belongs to the Class: Ascidiacea, Order: Stolidobranchia, and Family: Styelidae. This classification places them within a group of marine invertebrates known for their filter-feeding habits and unique body structures.

Feeding

Stolonica socialis is a filter feeder, relying on microscopic organisms like plankton as their primary source of sustenance. They use their siphons to draw in water and filter out the tiny food particles. This feeding strategy makes them a crucial component of the marine food web, helping to maintain the delicate balance of their ecosystems.

Associated Species

Image References

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