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| Colony
15-20cm, plate-like very thin (0.2-0.5cm) forming a cup or inverted
cone. Corallites tiny low rounded bumps. Polyps tiny with few short
tentacles. Colours seen include yellow, brown, green and bluish. Commonly
seen on many of our shores. |
Colonies
20-50cm, plate-like thick (1cm) sometimes folded into a cabbage-like
shape or with columns from the centre. Corallites cup-like, polyps
large (1-1.5cm) with many fat tentacles. Colours various pastel shades.
Commonly seen on many of our shores. |
Colonies
20-50cm, plate-like thick (1cm) encrusting. Corallites conical, polyps
small (1cm) with fewer long, thin tentacles. Colours yellow, brown,
green, bluish. Seen on many of our Southern shores. |
Colonies
20-50cm, plate-like thin (0.5cm) often folded into ruffles. Corallites
conical, polyps small (1cm) with many short tentacles. Colours pale
pinkish, yellow, dark brown with yellow edges, pale green with pink
edges. Seen on many of our shores. |
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Colony
15-20cm, a thin plate, outer edge lacks polyps. Corallites are tiny.
There may be bumps but these are smaller than the polyps. The polyps
are tiny. Colours brown with white tips or white, greenish, bluish.
Seen on our Southern shores.
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Colonies
about 20cm, plate-like. Corallites (less than 0.5cm) form bumps with
prickly ridges in the spaces between the corallites. Colours purple,
bluish to brown and yellow. Rarely seen, on our Southern shores. |
Colonies
about 20cm, plate-like encrusting. Large cup-shaped corallites (1.5cm) that look like a nose. Rarely seen, on our Southern shores. |
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| Colonies
about 20cm, encrusting plates or frilly branches. Corallites form
concentric rings of ridges. Polyps usually not visible. Colours brown,
orangey, blue and green. Seen on our Southern shores. |
Colony
10-15cm, encrusting or fans, sometimes with knobbly portions. Corallites
walls thick, short and form meandering valleys and ridges, fanning
from centre of the plate to the edges. Colour seen include beige,
brown, yellow, green and blue. Seen on some of our Southern
shores. |
Skeleton
(30-40cm) plate-like, attached at the base but wavy at the edges.
Corallites form a distinctive pattern of fine parallel lines perpendicular
to the edge. Colours brown, green and blue. Seen on our
shores. |
Skeleton
(about 20cm) plate-like, attached at the base but wavy at the edges.
Corallites form a distinctive pattern of thick parallel lines.Rarely seen, on our Southern shores. |
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