The Pineapple Sea Cucumber (Thelenota ananas) is a large, distinctive species of sea cucumber found in tropical waters worldwide. It’s a common sight in coral reefs and rocky shores, often dwelling among the diverse flora and fauna that make up these vibrant ecosystems.
Description & Characteristics
The Thelenota ananas is characterized by its rough, bumpy skin that resembles the surface of a pineapple, hence its common name. These bumps, or tubercles, are covered in tiny, sharp spines that provide some protection. The species can reach a significant size, growing up to 60 cm in length. Its body is generally cylindrical, with a distinct oral end containing a mouth surrounded by tentacles and an anal end at the opposite extremity. The color of the Thelenota ananas can vary, ranging from shades of brown, grey, and even reddish-brown, with distinct darker patches and lines often present.
Habitat and Occurrence
The Thelenota ananas is typically found in shallow, tropical waters, often residing in coral reefs, rocky shores, and seagrass meadows. This species favors environments with a good supply of organic matter, making it a common inhabitant of the Indo-Pacific region, including the Red Sea, the Indian Ocean, and the western Pacific. They are often observed in the intertidal zone, where they navigate the transition between land and water.
Taxonomy
The species Thelenota ananas belongs to the Class: Holothuroidea, Order: Synallactida, and Family: Stichopodidae. This family is known for its diversity and includes many species that are important members of their marine ecosystems, particularly in the Indo-Pacific region. Sea cucumbers, like the Thelenota ananas, are integral to maintaining the health of the ocean floor, playing a vital role in nutrient cycling and sediment turnover.
Feeding
The Thelenota ananas, like most sea cucumbers, is a detritivore, meaning it feeds primarily on organic matter. It consumes algae, detritus, and sediment, playing a crucial role in the decomposition and recycling of nutrients within the marine ecosystem. They use their tentacles to gather food particles and transport them to their mouths. The Thelenota ananas may also supplement its diet with zooplankton.
Image References