by David Young | Aug 1, 2024 | Echinoderms
Author:  Martina Sarra Video and photos by Lucinda Booth and D. Young Scientific Name:  Strongylocentrotus droebachiensis Size Range:the average adult size is 50 mm (2 in), but it has been recorded at a diameter of 87 mm (3.4 in). Of the three species of sea urchin...
by David Young | Aug 1, 2024 | Echinoderms
Authors:Â Emma Grigg & Nastja Kharine Scientific Name:Â Strongylocentrotus purpuratus Size range: normally grows to 10cm (4 inches) but may be as large as 15 cm (6 inches) Identifying Features:Â As in its name, the purple sea urchin is a dark purple but it...