They dive in their ‘largest’ tank.

‘Largest’ is a superlative adjective.

It compares more than 2 things.

Usually it follows ‘the’.

the largest tank

But it also follows possessive forms such as ‘their’ –

their largest tank

‘Sydney’s’ -

Sydney’s largest tank.

Or ‘our’ -

our largest tank.

Listen again.

We scuba dive inside our largest tank, the oceanarium, with 8 grey nurse sharks.

Next, listen for some more superlative adjectives.

They’ve been alive on the planet for about 500 million years.

They’re the earliest fossilized records of sharks.

My personal feeling about sharks is that they’re the most misunderstood animal on the planet.

The superlative adjectives were

‘earliest’

the earliest fossilized records.

And ‘most misunderstood’

the most misunderstood animal.

When an adjective is 3 syllables or more:

mis–und–er-stood

you don’t add ‘-est’ to the end.

Instead, you say ‘most’ before it:

most misunderstood.

My personal feeling about sharks is that they’re the most misunderstood animal on the planet.