CaspianSeaMap 2025 Broad-Scale Predictive Habitat Map - Seabed Substrate Type

Classified seabed substrate types for European seas. Produced by EMODnet Seabed Habitats as an input layer for the 2025 EUSeaMap broad-scale habitat model for the Caspian region, based on a combination of EMODnet Geology seabed substrate products and biological substrates extracted form individual habitat maps from surveys around European seas. The extent of the mapped area includes the Caspian sea.

The layer of seabed substrate was produced using data from EMODnet geology at the following scales: 1:10k, 1:500k, 1:1m, 1:5m.

The seabed substrate include: Rock and other hard substrata Coarse substrate Mixed sediment Sand Muddy Sand Sandy Mud Mud Bottoms dominated by Mytilaster lineatus and Amphibalanus improvisus Bottoms dominated by Dreissena grimmi

Biological substrates were included in the 2025 version of EUSeaMap to assist in the classification of biogenic habitats. A bespoke classification of benthic broad habitat types was developed as part of EMODnet Seabed Habitats.

An accompanying confidence layer is available for viewing and download from EMODnet Seabed Habitats - metadata is linked in the 'Composed of' section below.

A report on the methods used in the 2025 version of CaspianSeaMap will be published in due course and the report on previous version (v2023) is linked in lineage.

Credit: Licensed under CC-BY 4.0 from the European Marine Observation and Data Network (EMODnet) Seabed Habitats initiative (https://emodnet.ec.europa.eu/en/seabed-habitats), funded by the European Commission.