Year 4 Forest School were down at Holywell beach yesterday. Thanks to the spring tide the low tide was super low exposing lots of rock pools full of assorted molluscs and crustaceans for us to catch in our nets and get a close look at. The weather stayed dry and warm and we scavenged the shore line looking for whelk eggs, mermaid’s purse, cuttlefish remains and various sea shells such as Limpets and Dog Whelks. We found out that Dog Whelks eat Limpets by boring through their shells, squirting in some gastric juices and sucking out the liquefied Limpet. Yummy!We collected around ten different types of seaweed including Serrated Wrack, Sea Lettuce, Sea Belt, Dulse and Thong Weed. Did you know that a Sea Potato is not a plant but a kind of Sea Urchin?
We discovered that Spring tides occur when the earth, sun and moon are lined up in a row at the new moon and full moon phases. This causes the gravitational pull of the sun and moon to work together in one direction to pull on the earth’s water, causing the greatest difference between high and low water. Smaller tides, called neap tides, are formed when the earth, sun and moon form a right angle. This causes the sun and moon to pull the water in two different directions. Neap tides happen during a quarter or three-quarter moon.
We also did some amazing artwork using the natural materials that we found on the beach.
Group 1 will be going to the beach in two weeks time.