‘Sand Dollars, quietly spent’ by Amelia Saxby and Theo Parish.
Sand dollars, like all other urchins, have a calcified exoskeleton so they are highly vulnerable to ocean acidification.
‘Sand Dollars, quietly spent’ by Amelia Saxby and Theo Parish.
Sand dollars, like all other urchins, have a calcified exoskeleton so they are highly vulnerable to ocean acidification.