Los Angeles ? The deep-sea adventure “Finding Nemo” hooked the top spot at the box office Sunday with an estimated $70.6 million opening weekend.

The Disney-Pixar comedy, about a worrisome clownfish searching for his aquarium-trapped young son, sank the comedy “Bruce Almighty” to second place with $35.6 million, according to studio estimates.

Meanwhile, the Mark Wahlberg caper remake “The Italian Job” opened in third place with $19.3 million, while “The Matrix Reloaded” continued to plunge after its spectacular debut three weeks ago, landing in fourth place with $15 million.

“Finding Nemo” scored the biggest debut ever for an animated film, swimming past the $62 million opening for previous record-holder “Monsters Inc.”

The following are estimated ticket sales for Friday through Sunday at North American theaters, according to Exhibitor Relations Co. Inc.

1. “Finding Nemo,” $70.6 million.

2. “Bruce Almighty,” $35.6 million.

3. “The Italian Job,” $19.3 million.

4. “The Matrix Reloaded,” $15 million.

5. “Daddy Day Care,” $6.8 million.

6. “X2: X-Men United,” $5.02 million.

7. “Wrong Turn,” $5.01 million

8. “The In-Laws,” $3.7 million

9. “Down With Love,” $1.6 million.

10. “Bend It Like Beckham,” $1 million.