Cute but not cuddly, a colony of sea squirts dubbed “Skeleton panda ascidian” by divers after being discovered in waters off Okinawa Prefecture has been identified as a new species. The sea ...

Caption Narrow jets of material, called spicules, streak upward from the solar surface at speeds often greater than 100 kilometers per second (60 miles/sec). Some of the spicules' plasma (ionized ...

Use your Critter Chart and textbook to help you find the important morphological features of each group. 1. Modern desmosponge. Find the pores, and notice the thread-like spicules made of protein.

He says, ‘I hope they ask the question: “what is that?”’. Resembling a boat’s anchor, these are the minuscule projections from the skin of a sea cucumber, known as spicules. These needle-sharp ...

Illustration by Kateryna Kon, Science Photo Library This illustration depicts an eye with retinitis pigmentosa, a genetic eye disease marked by attenuated blood vessels, pigmentary bone spicules ...