Have a bath,my tortoises!

I have two tortoises in my fish tank.One of them was bought nine years ago,the other was given by my grandma-in-law eight years ago.At that time,they were small in size(can be held in a palm) and seemed cute and pathetic.By now they have grown three times bigger.Look,here is a 'planform':

Tortoises are seasonal animals.They are greedy and active in summer.They will eat up all the flesh or fish I put in the fish tank.It seems that they never know what is full.They are not afraid of getting on weight because they will store these energy into fat and use it to pass the long winter.In winter,they become quite lazy and are always sleeping.If you give them some delicious food in winter,they will show no interest.
My two tortoises are always friendly to each other.However,they sometimes loss their tempers and fight against each other because of food.Their fight seldom lasts for a long time,maybe they don't wanna others see that they are not gentlemen.But anyway I caught the moment.Let's share:

These days they were quite active and my fish tank got dirty frequently.Today,I decided to give them a shower bath besides changing the water.So I put them in a washbasin and washed them using the shower.But they didn't like my service and threated me with their hoarse cry.

Although I have fed them for nearly a decade,they are aggressive each time I try to touch them.I don't know what they think of me or whether they are content with me.After all,they are too lazy to write blogs. So I can't read their thoughts.
Will they be angry after reading this post?Who knows,but one thing is certain------they can't eat me!Ha!