hydroids from Ireland to Antarctica

Left: shallow water hydroid Tubularia indivisa. Individual polyps less than a centimeter across. Middle: the Antarctic solitary hydroid Monocaulus parvula, polyp 6-8 cm across. Right: the giant hydroid Branchiocerianthus imperator, polyp greater than 50 cm across.

Leave a Reply

Your email address will not be published. Required fields are marked *