Note that an elephant’s heart does not end in the stereotypical single apex (point) at the left ventricle. Elephants have a 2-pointed heart, with two large ventricles used to pump blood to the body AND lungs… who else has this feature? Ahh yes, their closest living relatives: seacows (manatees, dungongs; the Sirenia)! Probably a leftover swimming adaptation. Big, muscular ventricles (the darker purplish tissue to the left and right of the yellow-pinkish line of tissue running from top to bottom along the middle) are useful for pumping blood against resistance, such as when using the trunk as a snorkel while swimming.
The bottom of the heart is at the bottom of the screen; you’re looking straight at the front of the heart.
Human heart for comparison, from Wikipedia; scale relative to pic above is not too far off (elephant relatively a bit undersized):
And more about elephants from Inside Nature’s Giants, too!