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The jewel urchin grows to a diameter of about 3 to 5 centimetres (1.2 to 2.0 in) and has spines up to 3 centimetres (1.2 in) long. Many of them are shorter than this and provide a dense covering. The test is usually a pale brown colour with a red or dark brown stripe along the joints of the main inter ambulacral plates.
Eucidaris tribuloides, the slate pencil urchin (named after slate pencil), is a species of cidaroid sea urchins that inhabits littoral regions of the Atlantic Ocean. As a member of the basal echinoid order Cidaroida , its morphological, developmental and molecular genetic characteristics make it a phylogenetically interesting species.
The larval sea urchin does not resemble its adult form, because the sea urchin is an indirect developer, meaning its larva form must undergo metamorphosis to form the juvenile adult. Here, the focus is on skeletogenesis in the sea urchin species Strongylocentrotus purpuratus , as this species has been most thoroughly studied and characterized.
Sphaerechinus granularis is a species of sea urchin in the family Toxopneustidae, commonly known as the violet sea urchin, [2] or sometimes the purple sea urchin (though the latter is also a common name for a Pacific sea urchin Strongylocentrotus purpuratus). Its range includes the Mediterranean Sea and eastern Atlantic Ocean. [1]
Echinometra lucunter is common throughout the Caribbean Sea and also occurs in Florida, Bermuda and the South American coast as far south as Brazil. It occurs on shallow rocky areas and on coral reefs usually at depths of 2 metres (6 ft 7 in) or less but occasionally in deeper water down to about 45 metres (148 ft).
Another recipe called for the addition of seawater, pitch and rosin to the wine. A Greek traveler reported that the beverage was apparently an acquired taste. [ 42 ] Sour wine mixed with water and herbs ( posca ) was a popular drink for the lower classes and a staple part of the Roman soldier's ration.
Astropyga radiata is a large urchin with a test diameter of up to 20 cm (8 in), flattened or slightly concave on the aboral (upper) side. The spines are up to 4 cm (1.6 in) long and are grouped in five vertical clusters in between which are V-shaped areas with no spines corresponding to the interambulacral plates.
Bryobium, commonly known as urchin orchids [3] or 藓兰属 (xian lan shu), [4] is a genus of flowering plants in the family Orchidaceae. Orchids in this genus are epiphytic or lithophytic plants with large, fleshy pseudobulbs , each with up to three leathery leaves and small, often hairy flowers.