Marine life does not always deteriorate as you go deeper. We dives sites in the 50-60m range that has more life than reefs at 20m. Diving the right sites at various depth is the trick. The following pics were taken at 105m (340ft) and show a beautiful reef and a Coelacanth (Latimeria chalumnae) thought to be extinct. Marine habitats change depending various factors, you just need to find the right combo.
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Let me tell you, it doesn't look like that in Norway!
Anyway, I guess I could have added "typically" to my sentence I know there are exceptions, but on a general note......
Beautifull pic's btw, and something that fits right into what I ment with "something specific" that I could consider doing a deep dive for.
Best,
Bjørn