At present, the abundance and diversity of animals (sponges, tunicate and corals) living on the surfaces of the Castle Harbour and Tynes Bay ash blocks is comparable to the concrete-only control reefs.
(the abundance and diversity of animals; tunicate; T:At present) (corals; living; L:on the surfaces of the Castle Harbour and Tynes Bay ash blocks)
the abundance and diversity of animals corals
tunicate living
T:At present
L:on the surfaces of the Castle Harbour and Tynes Bay ash blocks