Breadcrumb sponge

Breadcrumb sponge

Observation - Breadcrumb sponge - UK and Ireland. Description: Found under overhanging rocks at very low tide in amongst barnacles. I'm fairly sure the green is breadcrumb sponge, is the orange the same? If so, what influences the different colours?

Found under overhanging rocks at very low tide in amongst barnacles.
I'm fairly sure the green is breadcrumb sponge, is the orange the same? If so, what influences the different colours?