Which land animal is known as an urchin?
Sea urchin which sea urchins resemble; they have archaically been called sea hedgehogs. The name is derived from Old French "herichun", from Latin "ericius", hedgehog. Like other echinoderms, sea urchin early larvae have bilateral symmetry, but they develop five-fold symmetry as they mature. This is most apparent in the "regular" sea urchins, which have roughly spherical bodies with five equally sized parts radiating out from their central axes. The mouth is at the base of the animal and the anus at the top; the lower surface is described as "oral" and the upper surface as "aboral". Several sea urchins, however, including the
Urchin (Dungeons & Dragons) The land urchin first appeared in the second set of "Monster Cards" (1982). The land urchin also appeared in the original "AD&D" first edition "Monster Manual II" (1983). The black urchin, the green urchin, the land urchin, the red urchin, the silver urchin, and the yellow urchin appeared in the second edition of "Advanced Dungeons & Dragons" in "Monstrous Compendium Volume Two" (1989), and were reprinted in the "Monstrous Manual" (1993). The urchins constitute a family of marine creatures which resemble 3-foot diameter balls of various colors with thousands of radiating 3-inch long spines. An urchin fires its spines at