Two Cape false-limpets (Siphonaria capensis) in a shallow rock pool. Mosselbaai, Western Cape (2022) - iNaturalist Apex of the shell almost central. Outline oval but slightly swollen on the right to accommodate a siphon that extends outwards from the lung cavity. About 40-50 low, flat ribs that are roughly equal in size and scarcely project,… Continue reading Cape false-limpet (Siphonaria capensis)
Tag: South Africa
Bearded limpet (Scutellastra barbara)
A bearded limpet on a rock surface. Port Alfred, Eastern Cape (2024). Highly variable, but typically tall, with strong, spiky ribs. Sides of the foot white, speckled grey. About 80 mm. Maximum size : 100 mm (Kensley, 1973; Kilburn & Rippey, 1982). Occurs on the low-shore and subtidally. On the East Coast, it defends 'gardens'… Continue reading Bearded limpet (Scutellastra barbara)
Marine springtail (Anurida maritima)
Springtail cruising on a rock surface. Doringbaai, Western Cape (2020) - iNaturalist Minute, mauve-coloured, six-legged, wingless creatures, covered in short waxy hairs. About 2-3 mm. During high tides, shelters in air pockets under rocks and shells, or in crevices. Emerges during low tide to scavenge, sometimes congregating around dead or dying animals. Often seen floating… Continue reading Marine springtail (Anurida maritima)
Indo-Pacific man-of-war (Physalia utriculus)
Bluebottle washed on the rocks. Cape Agulhas, Western Cape (2020) - iNaturalist Unmistakable with its inflated blue-green float and long trailing tentacles. Float 50 mm long, tentacles up to 10 m long, but contracting to about 30 cm. Floats on the surface of the sea and is vulnerable to being cast ashore by onshore winds.… Continue reading Indo-Pacific man-of-war (Physalia utriculus)
Mauve sea cucumber (Pentacta doliolum)
Contracted mauve sea cucumber found under a boulder. Old Woman's River, Eastern Cape (2021) - iNaturalist Body tough. Upper surface mauve-black, becoming pale grey on the flattened underside. Tubefeet strongly suctorial and restricted to five regular bands, each consisting of a double row. Ten irregularly-branched tentacles. A filter-feeder which forms dense beds on shallow reefs… Continue reading Mauve sea cucumber (Pentacta doliolum)
Pondoland river crab (Potamonautes danielsi)
Crab hoping to intimidate its handler. Assegaai Trails, Eastern Cape (2020) - iNat Purple, reddish-brown or greenish-brown carapace, fairly uniform in color. Tips of dactyli - the part of the legs that touch the ground - and chelipeds usually displaying a lighter orange color. Smooth to lightly granulated carapace at the flanks and epibranchial regions.… Continue reading Pondoland river crab (Potamonautes danielsi)
The Superpowers of South Africa’s Most Hated Bird 🐦🇿🇦 [8 min]
Let's Start A Conversation ! 💬 #11 - Biological & Ecological News Video published on my YouTube channel as part of the 'Let's Start A Conversation' playlist, that shares biological and ecological news in a fun and concise manner. https://www.youtube.com/watch?v=XQlh9BF42yY&t=11s When I first came to South Africa, I did not know about the ‘African alarm… Continue reading The Superpowers of South Africa’s Most Hated Bird 🐦🇿🇦 [8 min]
Oval urchin (Echinometra mathaei)
Oval urchin found between stones at the bottom of a rock pool. Port St Johns, Wild Coast, Eastern Cape (2021). Also referred to as the burrowing urchin or the rock-boring urchin. Test oval when viewed from above, purple to black. Spines fairly long and stout, tapering evenly to a sharp tip. Spine color purple, brown… Continue reading Oval urchin (Echinometra mathaei)
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)
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)
