skull base

skull base

Observation - skull base - UK and Ireland. Description: found on N.sea beach after storm.Very black and shiny. Appears to have nostrils and small teeth/fangs at the front.evidence of spinal column at top rear, cartiledge at base rear.Length 15cm. Skate abundant offshore. Why is it black?

found on N.sea beach after storm.Very black and shiny. Appears to have nostrils and small teeth/fangs at the front.evidence of spinal column at top rear, cartiledge at base rear.Length 15cm. Skate abundant offshore. Why is it black?