The year four children in Constantine School's Kenwyn class have enjoyed a week of exciting visits to enhance their learning around the topic of Awesome Oceans.

They started with a visit to the Maritime Museum in Falmouth where they took part in workshops based around the Tudor period, Sir Francis Drake, adventures at sea and survival stories. A visit to Falmouth Art Gallery was next on the list and inspired pupils to think about the seas and how differently they appear in a whole range of art work brought out for display.

The third visit was to Ferry Boat beach on the Helford where Clare Scott from the Lizard Trust provided a rock pool safari expedition. "This was awesome and helped with our learning about habitat, food chains, survival and adaptations," said assistant head teacher Cags Gilbert. "The most exciting find was a huge whelk shell with an anemone on it. Whist studying it we noticed it was murdering a small shore crab in front of our very eyes.

"We also were extremely lucky to find a mermaid's purse with a live embryo moving inside it. What an amazing find. Having contacted the Shark Trust we now know it was an embryo of a Small Spotted Cat Shark. Claire cleverly waded out and used its tendrils to anchor it down so hopefully it stays there to develop rather than it being washed up with the next tide."

A short video clip can be seen on the school's website, constantine.cornwall.sch.uk/rock-pool-murderers/. The Shark Trust has now registered the children's find on the Great Eggcase Hunt database (www.eggcase.org) which has over 80,000 individual records.