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The Sea in Maps and Pictures

MAREANO maps depth and topography, sediment composition, contaminants, biotopes and habitats in Norwegian waters.

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News

News

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A Surprise on the Seafloor: When a “Boring” Dive Turned Extraordinary

20.05.2026

Cruise diary: On Thursday, April 23rd, we were quietly cruising along one of the survey lines, on a basin area of the Arctic Mid‑Ocean Ridge (AMOR), with NORMAR’s ROV Ægir6000.

Popcorn-like shells and brown slime creatures under the microscope.

Secrets in the sediments: What foraminifera reveal about the deep-sea

13.05.2026

Expedition Log: These “popcorn” like organisms give us valuable insight into the development of the seafloor.

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Snow at sea: an uncommon experience for our Portuguese guests

06.05.2026

Cruise diary: After yet another short night, we wake up to a few snowflakes on our cabins’ portholes. A quick look outside before the shift change (at 4 am) and there it was: the decks of RV Kronprins Haakon were blanketed in snow.

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Selected maps

Map showing the vulnerable biotopes mapped by MAREANO (IMR) to date

Vulnerable biotopes

map that shows marine landscape and forms outside the harbour of north-norway

Landscapes/Forms

A map showing biotopes along the coast and sea-area in North-Norway

General Biotopes

map presenting topographic details of the sea floor and landscape along the northern norwegian coast-line

Shaded Relief

More maps

Data

MAREANO maps depth and topography, sediment composition, contaminants, biotopes and habitats in Norwegian waters. The results of the surveys are available on this website, visualised through maps. A number of our partners also supply data and maps from their own studies.

Bathymetric Data

Services rendered by the Norwegian Mapping Authority, Hydrorgaphic Service.

Geological data

NGU is Norway’s national geological survey. We map Norway's geology, and disseminate and present data in order to meet Society’s needs for basic geological knowledge.

Biological data from Institute of Marine Research (IMR)

Services rendered by the Institute of Marine Research.

Chemical data

Geological Survey of Norway (NGU) and the Institute for Marine Research (IMR).
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