Erosion of marine biological diversity

Other Names:
Decline of ocean biodiversity

In marine and coastal areas, the main threat to biodiversity arises from the over-exploitation of marine and coastal resources and from related fishing practices, although pollution and coastal degradation also represent significant threats.

Habitat conversion and degradation, overexploitation, pollution and sedimentation, coastal erosion, eutrophication, species introductions and climate change are considered the major causes of marine biodiversity loss.


Between 1970 and 2002 the ocean's biodiversity reduced by a third.

Biosciences Biology
Oceanography Marine
Related UN Sustainable Development Goals:
GOAL 14: Life Below Water
Problem Type:
E: Emanations of other problems
Date of last update
13.08.2021 – 17:45 CEST