The oxymoron of the onomatopoeic "gargling" and "delicately" shows the conflict that the narrator feels about whether he likes nature or not.
childhood wonder and ignorance of being able to find beauty in the strangest things
The sound of the bubbles creates a soothing sound, with an aggressive undertone.
graphic imagery
'delicately' - adverb connoting fragility and grace
'grew like clotted water'
simile - reminds reader of blood when reading the word 'clotted' - grotesque imagery
negative simile - foreshadows destruction and loss of purity
language associated with the frogspawn foreshadows the way the narrator becomes repulsed by nature
'poised like mud grenades'
simile - negative exploration of the way the frogs move and the negative colour of them -brown instead of yellow- implying he doesn't like the frogs and is threatened by them
military language makes It seem like frogs were about to attack
context
Seamus Heaney’s four year old brotherdied in a car accident when Heaney was a young boy. The death affected him badly and many of his poems are about loss of innocence.
Heaney grew up on a farm and many of his poems reflect his upbringing
structure
In the first stanza, the speaker in the poem is full of enthusiasm and enjoys nature.
In the last stanza, this changes as he becomes more aware of the dangers of the world around him