algal reef in a sentence

1. During the Ordovician the state was home to algal reefs up to 300 feet high.
2. ""'Heteroclinus fasciatus " "', the "'Banded weedfish "', is a species of clinid native to the Indian Ocean coast of Australia where it can be found in tide pools and on algal reefs.
3. ""'Heteroclinus eckloniae " "', the "'Kelp weedfish "', is a species of clinid native to the Indo-Pacific waters of the southern coast of Australia where it can be found in kelp and algal reefs.
4. ""'Heteroclinus macrophthalmus " "', the "'Large-eye weedfish "', is a species of clinid native to Indian Ocean waters around southern Australia where it prefers beds of sea-grass and algal reefs down to a depth of about.
5. It's difficult to find algal reef in a sentence.