One verse

Srimad Bhagavatam 8.7.18

8.7.18

निर्मथ्यमानादुदधेरभूद्विषं महोल्बणं हालहलाह्वमग्रत: । सम्भ्रान्तमीनोन्मकराहिकच्छपात् तिमिद्विपग्राहतिमिङ्गिलाकुलात् ॥ १८ ॥

nirmathyamanad udadher abhud visam maholbanam halahalahvam agratah sambhranta-minonmakarahi-kacchapat timi-dvipa-graha-timingilakulat

nirmathyamanat
while the activities of churning were going on
udadheh
from the ocean
abhut
there was
visam
poison
maha-ulbanam
very fierce
halahala-ahvam
by the name halahala
agratah
at first
sambhranta
agitated and going here and there
mina
various kinds of fish
unmakara
sharks
ahi
different kinds of snakes
kacchapat
and many kinds of tortoises
timi
whales
dvipa
water elephants
graha
crocodiles
timingila
whales that can swallow whales
akulat
being very much agitated

The fish, sharks, tortoises and snakes were most agitated and perturbed. The entire ocean became turbulent, and even the large aquatic animals like whales, water elephants, crocodiles and timingila fish (large whales that can swallow small whales) came to the surface. While the ocean was being churned in this way, it first produced a fiercely dangerous poison called halahala.