Dedicated to the conservation, protection and care of otters
Visit the Otter Shop : Join our mailing list


The International Otter Survival Fund (IOSF) is one of the world's leading otter charities. In the UK IOSF is the only charity solely dedicated to the conservation, protection and care of otters based on over 20 years of scientific research in the UK and around the world.

Otter numbers in the UK have increased slightly in recent years but the Eurasian otter is still classed as “Vulnerable” in the Red Data List.

Through education, research, influencing policy and partner working the IOSF is making progress but there is still much to be done here in the UK and other countries where otters are at risk.

Your support is greatly appreciated and the donations you make help secure a better future for otters in the UK and around the world.

We guarantee we will NEVER pass on your details to anyone else.


Illegal Trade

IOSF Report on the Illegal Trade in Otters, 2014.

The Fundraising Standards Board

We're here for the public to raise any concerns about fundraising, to ensure charities are accountable for their fundraising and to improve fundraising standards.

Team Otter

IOSF's website for children.

The year of the otter

IOSF has declared 2016 to be the Year of the Otter and we want as many people as possible to be involved.

Otters need your help

Read about the work of the International Otter Survival Fund (IOSF).

IOSF Video

IOSF YouTube video.

Quick Links

Adopt or Donate!

Visit the Otter Shop!

Join our mailing list

The year of the otter

Our wish list

Support us

Otter Blog

Paul's Blog