Crabs & Others · Hermit Crabs · Marine Life

Yellow-banded hermit crab (Clibanarius virescens)

Specimen of yellow-banded hermit crab peaking out of a scaly dogwhelk (Nucella squamosa) shell and trying to flip himself. Port Alfred, Eastern Cape (2024). Body olive-green. Nippers about equal in size, spotted with yellow. Fingers yellow with black tips. Walking legs banded with yellow. Between 10 and 20 mm. Abundant hermit crab in mid-to-high shore… Continue reading Yellow-banded hermit crab (Clibanarius virescens)

Crabs & Others · Marine Life · Prawns & Shrimps

Sand shrimp (Palaemon pacificus)

Sand shrimp caught in a rock pool. Port Alfred, Eastern Cape (2022). Transparent, with vertical bars across the body. Opaque when preserved. Front legs with slender nippers and yellow spots at the joints. Rostrum well developed, toothed and almost saw-like. Between 25 mm. Lives in intertidal pools and shallow areas with a sandy bottom. Scavenges… Continue reading Sand shrimp (Palaemon pacificus)

Marine Life · Sea Slugs

Pygmy seahare (Aplysia parvula)

Pygmy seahare cruising on an algal mat. Old Woman's River, Eastern Cape (2021) - iNaturalist A typical smooth-skinned sea hare with prominent tentacles and ear-like rhinophores. Plain brown or with tiny white dots. About 60 mm in length. Common in shallow bays and estuaries. Hides by day and emerges at night to graze on seaweeds.… Continue reading Pygmy seahare (Aplysia parvula)

Marine Life · Whelks

Variable burnupena (Burnupena lagenaria)

Variable burnupena outgrown by a slipper limpet. Port Alfred, Eastern Cape (2022). Shell is shorter (spire less than half the aperture length) and often has wavy dark flames.The commonest species on the South-East coast, where it has obvious coarse spiral ridges and its aperture is violet-brown, or yellow. On the West coast, it has an… Continue reading Variable burnupena (Burnupena lagenaria)

Limpets · Marine Life

Pink-rayed limpet (Cymbula miniata)

Pink-rayed limpet overgrown by algae. Port Alfred, Eastern Cape (2021) - iNaturalist Shell thin, flat and nearly oval, with about 80 fine riblets that alternate in size and are slightly prickly. Pale, shot with numerous beautiful pink rays. Interior pale in the center and with a bluish sheen over the pink rays. About 80 mm.… Continue reading Pink-rayed limpet (Cymbula miniata)

Chitons · Marine Life

Dwarf chiton (Ischnochiton oniscus)

Gang of dwarf chitons under a boulder. Old Woman's River, Eastern Cape (2021) - iNaturalist Colour often white but can occur in a wide variety of patterns and colours. Valves textured with fine pits, which are often arranged in rows, but lacking radiating ridges. Girdle narrow, covered in tiny scales that appear smooth to the… Continue reading Dwarf chiton (Ischnochiton oniscus)

Marine Life · Winkles & Periwinkles

Pink-lipped topshell (Oxystele sinensis)

Large pink-lipped topshell on a bed of coralline algae. Port Alfred, Eastern Cape (2021) - iNaturalist Larger than the other Oxystele species. Round, blunt-spired shell with fine spiral sculpturing. Dark purple-black above. Aperture with a distinctive pink inner lip. About 45 mm. Lives moderately low on the shore, extending down to about 5 meters. Grazes… Continue reading Pink-lipped topshell (Oxystele sinensis)

Limpets · Marine Life

Rayed limpet (Helcion pruinosus)

Rayed limpet with iridescent green spots and rays in a shallow rock pool. Port Alfred, Eastern Cape (2021) - iNaturalist Shell low, fragile and oval. Apex about one-third from the front margin. Surface smooth, pale brown, shot with beautiful iridescent green spots and rays. About 25 mm. Hides beneath low-shore boulders during the day, and… Continue reading Rayed limpet (Helcion pruinosus)

Echinoderms · Marine Life · Starfish

Reticulated starfish (Henricia ornata)

A maroon reticulated starfish found in a rock pool on the shore. Port Alfred, Eastern Cape (2023) - iNaturalist Arms long, very gradually tapering and cylindrical. Color orange to maroon with an irregularly-honeycombed surface texture. Up to 90 mm across. Thought to feed on sponges by everting the stomach and digesting the sponge tissue in… Continue reading Reticulated starfish (Henricia ornata)

Marine Life · Sedentaria · Worms

Cape reef-worm (Gunnarea gaimardi)

Cape reef-worm stuck in a rock crevice. Yzerfontein, Western Cape (2020). Previously known as Gunnarea capensis. Gregarious, forming massive intertidal reefs of sandy tubes. There is a double row of 40-50 stiff golden bristles on the head, forming a 'door' (operculum) that blocks the tube when the worm withdraws. Worms are about 50 mm long.… Continue reading Cape reef-worm (Gunnarea gaimardi)