orange sea pen (ptilosarcus gurneyi)

anemone anemones animal anthozoa aquarium aquatic bottom british canada center centre cnidaria coast colorful colourful columbia coral discovery encrinus feather fleshy floating fluorescent gurney hydroids invertebrate life little luminesce luminescence luminescent macro marine movement ocean octocorallia orange pen pennatula pennatulacea phosphorea ptilosarcus salt saltwater sandy sea seapen shaw sidney soft softcoral tube umbellula underwater victoria water west worm yellow