Corrected sentences:
Orcas are the biggest dolphins. Even baby orcas can be as long as a small car.
Why this is better — simple steps:
- Start each sentence with a capital letter: "Orcas" and "Even".
- Put a period at the end of the sentence. You can use an exclamation mark (!) if you want to show excitement.
- "Baby orcas" says the young ones clearly. You could also say "babies," but "baby orcas" fits nicely here.
Another short way to say it: Orca calves can be as long as a small car!