Hunting bluish and orange spiny starfish. Port Alfred, Eastern Cape (2022) - iNaturalist Body salmon-pink, orange, deep blue or blue-grey. Aboral (dorsal) surface irregular, covered in conspicuous spines, each surrounded by a halo of minute pincer-like organs (called pedicellaria) that are used to keep the body surface clean. Tube-feet in 4 series. Small red eyespot… Continue reading African spiny starfish (Marthasterias africana)
Tag: rocky shores
Hartlaub’s Gull (Chroicocephalus hartlaubii)
Non-breeding adult cruising the rocky shores, in search of sustenance. Yzerfontein, Western Cape (2020) - iNaturalist Also known as the king gull. Short, thin and dark bill, with deep red legs. Eyes usually dark at all ages, but some birds have whitish eyes. Told from vagrant gulls in flight by grey underwing and mostly black… Continue reading Hartlaub’s Gull (Chroicocephalus hartlaubii)
Flame-patterned burnupena (Burnupena catarrhacta)
Whelk with a delicate flame pattern, and a slipper limpet (Crepidula porcellana) attached to its shell. Hondeklipbaai, Northern Cape (2020) - iNaturalist Previously know as Burnupena delalandii. Shell elongated (length twice width), smooth by crossed by numerous fine spiral ridges. Juveniles often patterned with alternating dark and light streaks or 'flames', later obscured by erosion… Continue reading Flame-patterned burnupena (Burnupena catarrhacta)
Eight-shell barnacle (Octomeris angulosa)
Old barnacle at the edge of a mussel bed (blue mussel, Mytilus galloprovincialis), with the circle of apertures forming at its base. Yzerfontein, Western Cape (2020). Moderately large with eight shell plates extremely rugged, irregular, massive, generally much corroded, steeply conical or even sub-cylindrical. Colour dirty-white, often slightly tinted yellow from the investing membrane, and… Continue reading Eight-shell barnacle (Octomeris angulosa)
Granular limpet (Scutellastra granularis)
An eroded limpet next to a younger limpet with its 'tentacles' out. Jacobsbaai, Western Cape (2020). Previously known as Patella granularis. Roughly oval, with approximately 50 fine ribs textured with white granules. Often eroded, smoothing the ribs and revealing a brown cap. Interior blue-white with a central brown patch and a dark border that is… Continue reading Granular limpet (Scutellastra granularis)
