Explore National Curriculum Geography KS1 resources on oceans and seas. Our interactive videos include the five oceans, marine wildlife and plastic pollution. BBC Teach.

The National Geographic Society - which has been releasing maps of the world since 1915 - announced their acknowledgement of the Southern Ocean yesterday on World Ocean Day .

The plastic in our oceans weighs the equivalent of 38,000 elephants, and, laid end-to-end, could circle the Earth 425 times.

The project, called Seabed 2030, aims to map 100% of the global ocean floor by 2030 using largely crowd-sourced data from science vessels, corporations and private boat owners around the world.

KS1 Geography: Oceans - The plastic problem. This short film, for 5 to 7 year old pupils, explores the threat posed by plastic to oceans and marine life. BBC Teach.