Kelaltalikes

Kelaltalikes are a group of marine organisms described as sessile, kelp-like invertebrates that resemble true kelp but lack plant-level organization. The term appears in recent coastal ecology literature to classify organisms that mimic kelp form while remaining non-photosynthetic and non-vascular.

Morphology: They exhibit a flexible thallus-like body with blade-like laminae arising from a stalk, and a holdfast that anchors to rocks or shells. Some species possess gas-filled spaces for buoyancy, but they lack true vascular tissue.

Distribution and habitat: Kelaltalikes occur in temperate coastal waters worldwide, commonly in kelp forests, seagrass beds, and rocky subtidal zones. They prefer sheltered environments with moderate currents and are often found at depths from intertidal to around 40 meters.

Ecology and behavior: They are mostly suspension feeders, trapping detritus and small plankton with mucous nets. They contribute microhabitats for invertebrates and juveniles of other species. They are sensitive to temperature changes and sedimentation.

Life cycle: Reproduction occurs via spores or specialized reproductive structures releasing motile or sessile propagules. They may reproduce sexually or asexually through fragmentation, enabling rapid local spread after disturbance.

Taxonomy and significance: Kelaltalikes are not universally recognized as a formal taxon; some researchers treat them as a kelp-mimicking clade within invertebrates. Ongoing phylogenetic work aims to clarify their relationships with bryozoans, tunicates, and other thallus-forming groups.

Conservation and research: As potential ecosystem engineers, they are studied for their responses to climate change, pollution, and kelp forest decline. They may serve as indicators of coastal ecosystem health.