Slender Theca [Obelia]

Description

Obelia is a genus within the Campanulariidae family, known for its slender theca and delicate appearance. These hydrozoans form branching colonies that resemble a fine mesh or lacework, often found in both shallow and deep marine environments. The colonies consist of polyps specialized for feeding, covered in a protective theca, and reproductive polyps that release free-swimming medusae during certain seasons. Obelia species play a significant role in marine ecosystems as both predators of small organisms and prey for larger species. They exhibit a fascinating life cycle involving both asexual polyp stages and sexual medusae stages.

Species

Slender Theca [Thecacera pacifica]

View Details

Pikachu Nudibranch [Thecacera picta]