miércoles, 13 de marzo de 2019

School excursion to the Regional Park Salinas y Arenales de San Pedro


School excursion to the Regional Park Salinas y Arenales de San Pedro

By Carmen Yelo and Ainhoa Ferre, 1ª ESO B

On Friday 22 February, 1ºA and 1ºB of ESO we went by bus to San Pedro del Pinatar, more specifically to the Regional Park Salinas y Arenales de San Pedro.

In the bus we were given some sheets with information about the flora of the place. And, when we got off at the Information Centre, Estela (the responsible of the centre) gave us a small explanation about what we were going to see there. Then we saw some videos about the fauna, flora and relief in the natural park, later we went to have a break at the back of the centre.

Before our walk around the park, the guides/teachers explained to us the concept of density of the water (weight contained in a volume), and we measured the density of freshwater using a densimetre. They also explained the different salt flats we were going to find there and how density was going to change due to the salt contained.

Afterwards we went for a walk around the regional park and we were observing some birds as flamingos or seagulls and also how plants could adapt to salinity, for example sea lettuce or Salicornia.

When we stopped always a teacher measured the density of the water, and we checked how it got bigger and bigger. After a long walk we arrived at a stream where we caught a little water that had a pinkish colour and we observed there a little animal called Artemia salina, which is the main food of flamingos.

We continued our walk till we arrived at the beach where the teachers showed us some rests of living things we can find there: sponges, poseidonias and even some molluscs besides that they explain us all about them. Finally we took a pleasant walk to the bus which was parked just in front of a very pink salt flat; that colour is produced by the big amount of salt it contained.

In our opinion, this trip was a great biology class with nature and a completely living ecosystem just a few steps away.

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