Keyhole & Slipper Limpets · Marine Life

Slipper limpet (Crepidula porcellana)

Slipper limpet found attached on the shell of a Burnupena whelk. Port Alfred, Eastern Cape (2022). Shell in the shape of a tear, with concave internal shelf. Surface smooth, usually brown. About 15 mm. Lives attached on other shells, frequently forming stacks, one on top of another. Changes sex as it matures : the larger… Continue reading Slipper limpet (Crepidula porcellana)

Flatworms · Marine Life

Carpet flatworm (Thysanozoon brocchii)

Carpet flatworm cruising at the bottom of a rock pool. Port Alfred, Eastern Cape (2023) - iNaturalist Body pink with a frilly margin. Dorsal surface covered with pink to purple finger-like projections, which both camouflage the animal and increase the surface area available for oxygen exchange. Between 20 and 30 mm in length. Common under… Continue reading Carpet flatworm (Thysanozoon brocchii)

Echinoderms · Marine Life · Starfish

Red starfish (Callopatiria granifera)

Large red starfish found under a low-hanging rock at low tide. Port Alfred, Eastern Cape (2023) - iNaturalist Previously known as Patiria granifera. Arms clearly tapering and flattened on their lower surface, giving them a semi-circular cross section. Colour deep orange to red, with a surface texture resembling small overlapping tiles. Up to 80 mm… Continue reading Red starfish (Callopatiria granifera)

Crabs & Others · Marine Life · True crabs

Pebble crab (Leucisca squalina)

Above and underside view of Leucisca squalina taken using a Leica microscope. Port Edward, KwaZulu-Natal (2022) - iNaturalist Carapace is light brown, sub-circular, broader than long, with a smooth dorsal surface and a moderately bi-lobed narrow front. Eyes hidden beneath the front. Chelipeds about half as long as carapace. Legs not granulated. Male abdomen with… Continue reading Pebble crab (Leucisca squalina)

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)

Crabs & Others · Hermit Crabs · Marine Life

Blue-eyed hermit crab (Calcinus laevimanus)

Both hermit crabs live in the shells of Lunella coronata (formerly Turbo coronatus). Port St Johns, Wild Coast, Eastern Cape (2021) - iNaturalist Also called left-handed hermit crab. Nippers dark brown with white fingers, that of the left side greatly enlarged to block the shell opening when the crab withdraws. Eyes blue, eyestalks and first… Continue reading Blue-eyed hermit crab (Calcinus laevimanus)

Brittlestars · Echinoderms · Marine Life

Banded brittlestar (Ophiarachnella capensis)

Banded brittlestar under a boulder. Fishhoek, Western Cape (2020) - iNaturalist Disc granular, arms strikingly patterned with alternating dark grey and pink (or red) bands. Very short spines flank the arms. The lower surface of the disc has a single long genital slit on either side of each arm. About 45 mm. Lives under boulders… Continue reading Banded brittlestar (Ophiarachnella capensis)

Gastropods · Marine Life · Turban shells & Nerites

Alikreukel (Turbo sarmaticus)

Large alikreukel covered in spiral fanworms (Spirorbis spp.) and pinkish barnacles. Old Woman's River, Eastern Cape (2021) - iNaturalist Also called the giant periwinkle, or the South African turban shell. Large and round, height less than width. About three rows of low nodules spiral around each whorl - though they may erode and disappear in… Continue reading Alikreukel (Turbo sarmaticus)

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)