Algae · Brown algae · Marine Life

Different-leafed sargassum (Sargassum incisifolium)

Specimen of sargassum found in a rock crevice. Cape Agulhas, Western Cape (2020) - iNaturalist Bushy yellow-brown plants with a triangular stem, small air-floats and two types of blades, attached to the substrate by a large conical holdfast that bears one or several strong perennial stems. The lower 'leaves' are oval and marginally toothed, while… Continue reading Different-leafed sargassum (Sargassum incisifolium)

Cnidarians · Marine Life · South Africa · Zoanthids

Green button polyp (Palythoa mutuki)

A colony of green button polyps covering the bottom of a rock pool. Port St Johns, Wild Coast, Eastern Cape (2021). Polyps are tall and only thinly connected at their bases by underground stems - called stolons. Column brown, embedded with fine sand grains, giving a sandpapery texture. Column trumpet-shaped when expanded. The wide oral… Continue reading Green button polyp (Palythoa mutuki)

Anemones · Cnidarians · Marine Life · South Africa

Crevice anemone (Anthopleura michaelseni)

Details of the spherules, and the long tentacles of the crevice anemone. Fishhoek, Western Cape (2020) - iNaturalist Also called long-tentacled anemone. Column with large sticky pads, to which shells and gravel adhere. Dark stripes usually radiate from mouth to the 96 long pink-to-brownish tentacles. Spherules present. Up to 150 mm in diameter, but commonly… Continue reading Crevice anemone (Anthopleura michaelseni)

Anemones · Cnidarians · Marine Life

Striped anemone (Anthothoe stimpsonii)

Two striped anemones partially open in the crack of a rock pool. Port Alfred, Eastern Cape (2024) - iNaturalist Also called humbug anemone. Live anemones exist in many different colours, ranging from green to orange. Column light green, brown, orange, yellow, white, transparent, grey or flesh. Column and tentacles without bright spots. Column smooth, not… Continue reading Striped anemone (Anthothoe stimpsonii)

Anemones · Marine Life

Sandy anemone (Bunodactis reynaudi)

Close-up of sandy anemones in a rock pool. Yzerfontein, Western Cape (2020) - iNaturalist Column covered in flattened sticky knobs, to which sand and gravel particles adhere. Over 300 short tentacles, no spherules. Colours include brown, green, pink and blue. Up to 80 mm in diameter. Often crowded into sandy gullies, around the bases of… Continue reading Sandy anemone (Bunodactis reynaudi)